The utility model discloses a hidden computer mouse. The mouse comprises a mouse body and a luminous source, the luminous source is positioned at the bottom of the mouse body; protruding strips are welded to the bottom of the mouse body, two strip-shaped grooves are symmetrically formed in the bottom of the mouse body in the length direction, guide rails are embedded in the strip-shaped grooves, agasket is arranged at the bottom of the mouse body, the upper surface of the mouse body is covered with a warm-keeping sleeve, and a semi-closed warm-keeping space is formed between the warm-keepingsleeve and the upper surface of the mouse body. The utility model discloses a hidden computer mouse. When the mouse is not used, the gasket can be pushed into the bottom of the mouse body along the guide rail; therefore, the gasket shields the light-emitting source at the bottom of the mouse body; the luminous source and the gasket do not generate relative displacement, so that a cursor of the mouse on the display screen does not move due to careless touch, and a semi-closed warm-keeping space is formed between the warm-keeping sleeve and the surface of the mouse body, so that the hand can beprevented from being frozen stiff due to long-time use of the mouse in cold days.