The utility model relates to the technical field of computer accessories, and provides a mouse which comprises a shell, a plurality of universal rolling pieces and an anti-skid piece, the universal rolling pieces are installed on the bottom wall of the shell, the anti-skid piece is installed on the shell in a telescopic mode in the first direction, and the anti-skid piece is provided with an extending position and a retracting position; when the anti-skid piece is located at the extending position, the size of the anti-skid piece protruding out of the bottom wall of the shell is larger than that of the universal rolling piece protruding out of the bottom wall of the shell; when the anti-skid piece is in the retraction position, the size of the anti-skid piece protruding out of the bottom wall of the shell is smaller than that of the universal rolling piece protruding out of the bottom wall of the shell. When the anti-skid piece in the mouse is located at the extending position, the size of the portion, protruding out of the bottom wall of the shell, of the anti-skid piece is larger than the size of the portion, protruding out of the bottom wall of the shell, of the universal rolling piece, in other words, when the mouse is placed on a table top, the anti-skid piece makes contact with the table top, the mouse is prevented from sliding when the table top inclines, and the mouse is prevented from sliding off from the table top; the problem that a mouse with a universal rolling piece at the bottom is prone to slipping off from an inclined table top is solved.