The invention discloses a wall or ground empty drum detector. The wall or ground empty drum detector comprises a connecting rod, an empty drum hammer, a signal transmitter and a signal receiver which are connected, wherein the signal transmitter is connected with the connecting rod close to one side of the empty drum hammer and a microphone; the signal receiver is connected with an earphone; a shock absorbing mechanism is arranged on the connecting rod; a sound signal transmitting device is connected with the connecting rod through the shock absorbing mechanism; the signal transmitter is arranged inside a closed shell; the microphone is arranged on the closed shell and connected with the signal transmitter which is inside the shell; the closed shell is connected with the shock absorbing mechanism. The wall or ground empty drum detector is compact and light in structure and high in accuracy for detecting wall and ground empty drums, and can be used for finding out quality problems and potential safety hazards of a measured surface in time, reducing the labor intensity of an operator and improving the reliability and efficiency of the detection.