Lockable rotary cutting mat

A lockable rotary cutting mat, said cutting mat includes a base plate and a rotary plate assembled on the base plate, which can be pushed to rotate, the central bottom portion of said rotary plate is assembled on the center of the base plate through a rotary connector, the bottom portion of the base plate has anti-slip components, said rotary plate includes a cutting surface and a periphery, wherein said periphery is formed with at least one concave edge portion, and wherein, at the corresponding position between said base plate and the periphery of said rotary plate, a locking component is configured, said locking component includes a moving base, a controller and a locking edge portion, said controller can be pushed to move forward or backward along a movement guiding axis preset on the moving base in the direction, said locking edge portion is connected to, and can be driven by said controller to have a locked position and a released position, when the locking edge portion is at the locked position, it is aligned to and is engaged with the corresponding concave edge portion, so that the rotary plate is fixed.