Timer

The utility model discloses a timer which comprises a shell, a timing movement, a display device, a timing movement control shaft and a sound control switch, the sound control switch is provided with a control end, and a switch control structure is arranged on the control shaft and the sound control switch. The switch control structure is provided with a shifting block fixed outside the control shaft and a rotating block located outside the shifting block, the rotating block is rotationally and detachably installed on one face of the shell, the face, provided with the rotating block, of the shell serves as an installation face, a limiting column is fixed to the position, located on the installation face, of the shell, and the first end of the rotating block is matched with the shifting block in an aligned mode. The end part of the second end of the rotating block is aligned and matched with the limiting column, a sound control switch is mounted on the mounting surface of the shell, and the end part of the sec