diff --git a/src/UserPointManagement.Model/Entities/User.cs b/src/UserPointManagement.Model/Entities/User.cs
index ca12ba6..6336605 100644
--- a/src/UserPointManagement.Model/Entities/User.cs
+++ b/src/UserPointManagement.Model/Entities/User.cs
@@ -6,5 +6,5 @@ public class User
 
     public string Name { get; set; }
 
-    public string Mobile { get; set; }
+    public string? Mobile { get; set; }
 }
\ No newline at end of file
diff --git a/src/UserPointManagement.Persistence/Migrations/20230730134035_ModifyUser.Designer.cs b/src/UserPointManagement.Persistence/Migrations/20230730134035_ModifyUser.Designer.cs
new file mode 100644
index 0000000..2721dee
--- /dev/null
+++ b/src/UserPointManagement.Persistence/Migrations/20230730134035_ModifyUser.Designer.cs
@@ -0,0 +1,89 @@
+// <auto-generated />
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+using UserPointManagement.Persistence;
+
+#nullable disable
+
+namespace UserPointManagement.Persistence.Migrations
+{
+    [DbContext(typeof(UserPointManagementDbContext))]
+    [Migration("20230730134035_ModifyUser")]
+    partial class ModifyUser
+    {
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "6.0.0")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("UserPointManagement.Model.Entities.User", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer")
+                        .HasColumnName("id")
+                        .HasComment("主键");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Mobile")
+                        .HasMaxLength(30)
+                        .HasColumnType("character varying(30)")
+                        .HasColumnName("mobile")
+                        .HasComment("手机号");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasMaxLength(50)
+                        .HasColumnType("character varying(50)")
+                        .HasColumnName("name")
+                        .HasComment("姓名");
+
+                    b.HasKey("Id")
+                        .HasName("pk_user");
+
+                    b.ToTable("user", (string)null);
+                });
+
+            modelBuilder.Entity("UserPointManagement.Model.Entities.UserPoint", b =>
+                {
+                    b.Property<long>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("bigint")
+                        .HasColumnName("id")
+                        .HasComment("主键");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<long>("Id"));
+
+                    b.Property<DateTime>("CreateTime")
+                        .HasColumnType("timestamp without time zone")
+                        .HasColumnName("create_time")
+                        .HasComment("新增时间");
+
+                    b.Property<int>("Point")
+                        .HasColumnType("integer")
+                        .HasColumnName("point")
+                        .HasComment("积分");
+
+                    b.Property<int>("UserId")
+                        .HasColumnType("integer")
+                        .HasColumnName("user_id")
+                        .HasComment("用户Id");
+
+                    b.HasKey("Id")
+                        .HasName("pk_user_point");
+
+                    b.ToTable("user_point", (string)null);
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}
diff --git a/src/UserPointManagement.Persistence/Migrations/20230730134035_ModifyUser.cs b/src/UserPointManagement.Persistence/Migrations/20230730134035_ModifyUser.cs
new file mode 100644
index 0000000..89f6326
--- /dev/null
+++ b/src/UserPointManagement.Persistence/Migrations/20230730134035_ModifyUser.cs
@@ -0,0 +1,41 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace UserPointManagement.Persistence.Migrations
+{
+    public partial class ModifyUser : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AlterColumn<string>(
+                name: "mobile",
+                table: "user",
+                type: "character varying(30)",
+                maxLength: 30,
+                nullable: true,
+                comment: "手机号",
+                oldClrType: typeof(string),
+                oldType: "character varying(30)",
+                oldMaxLength: 30,
+                oldComment: "手机号");
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AlterColumn<string>(
+                name: "mobile",
+                table: "user",
+                type: "character varying(30)",
+                maxLength: 30,
+                nullable: false,
+                defaultValue: "",
+                comment: "手机号",
+                oldClrType: typeof(string),
+                oldType: "character varying(30)",
+                oldMaxLength: 30,
+                oldNullable: true,
+                oldComment: "手机号");
+        }
+    }
+}
diff --git a/src/UserPointManagement.Persistence/Migrations/UserPointManagementDbContextModelSnapshot.cs b/src/UserPointManagement.Persistence/Migrations/UserPointManagementDbContextModelSnapshot.cs
index ff15431..d3f4674 100644
--- a/src/UserPointManagement.Persistence/Migrations/UserPointManagementDbContextModelSnapshot.cs
+++ b/src/UserPointManagement.Persistence/Migrations/UserPointManagementDbContextModelSnapshot.cs
@@ -33,7 +33,6 @@ namespace UserPointManagement.Persistence.Migrations
                     NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
 
                     b.Property<string>("Mobile")
-                        .IsRequired()
                         .HasMaxLength(30)
                         .HasColumnType("character varying(30)")
                         .HasColumnName("mobile")