The utility model discloses a fire extinguisher trolley anti-skid device, which comprises a body. The bottom of the body is a plane. Arc grooves adapted to the fire extinguisher trolley wheels are arranged at the top of the body. When in use, the wheels of the fire extinguisher trolley are put into the arc grooves to prevent the fire extinguisher trolley from moving under external force. When the fire extinguisher trolley is required to move, the trolley can move just through lifting up the trolley to make the wheels fall out of the grooves.