diff --git a/backend/alembic/versions/007_add_chat.py b/backend/alembic/versions/007_add_chat.py
new file mode 100644
index 0000000..c5be2ba
--- /dev/null
+++ b/backend/alembic/versions/007_add_chat.py
@@ -0,0 +1,52 @@
+"""006_add_chat
+
+Revision ID: ff653d5df198
+Revises: 0a6f11be9be4
+Create Date: 2025-05-21 15:44:29.763091
+
+"""
+from alembic import op
+import sqlalchemy as sa
+import sqlmodel.sql.sqltypes
+from sqlalchemy.dialects import postgresql
+
+# revision identifiers, used by Alembic.
+revision = 'ff653d5df198'
+down_revision = 'e6276ddab06e'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('chat',
+    sa.Column('id', sa.Integer(), sa.Identity(always=True), nullable=False),
+    sa.Column('create_time', sa.DateTime(timezone=True), nullable=True),
+    sa.Column('create_by', sa.BigInteger(), nullable=True),
+    sa.Column('brief', sqlmodel.sql.sqltypes.AutoString(length=64), nullable=True),
+    sa.Column('chat_type', sqlmodel.sql.sqltypes.AutoString(length=20), nullable=False),
+    sa.Column('datasource', sa.Integer(), nullable=False),
+    sa.Column('engine_type', sqlmodel.sql.sqltypes.AutoString(length=64), nullable=False),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_table('chat_record',
+    sa.Column('id', sa.Integer(), sa.Identity(always=True), nullable=False),
+    sa.Column('chat_id', sa.Integer(), nullable=True),
+    sa.Column('create_time', sa.DateTime(timezone=True), nullable=True),
+    sa.Column('create_by', sa.BigInteger(), nullable=True),
+    sa.Column('datasource', sa.Integer(), nullable=False),
+    sa.Column('engine_type', sqlmodel.sql.sqltypes.AutoString(length=64), nullable=False),
+    sa.Column('question', sa.Text(), nullable=True),
+    sa.Column('full_question', sa.Text(), nullable=True),
+    sa.Column('answer', sa.Text(), nullable=True),
+    sa.Column('run_time', sa.Float(), nullable=False),
+    sa.PrimaryKeyConstraint('id')
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table('chat_record')
+    op.drop_table('chat')
+    # ### end Alembic commands ###