The invention discloses a switch cabinet contact insertion depth wireless measuring instrument and belongs to the field of power detection equipment. Through the wireless measuring instrument, the problem that a switch cabinet contact insertion depth wireless measuring instrument, which is simple in structure, visual in measurement data display and capable of improving the efficiency of switch cabinet contact insertion depth measurement, is lacking in the prior art is solved. The wireless measuring instrument mainly comprises a shell, wherein a control box, a power line, a display screen, a keyboard and a detector storage box are arranged on the shell, an antenna pedestal is arranged on the shell, and an antenna I is installed on the antenna pedestal; a handle is arranged on the detector storage box, and a detector is installed in the detector storage box; the detector comprises an upper detector part and a lower detector part, wherein a detection disk and a clamping block are arranged on the upper detector part, a detection disk and a clamping block are arranged on the lower detector part, and the upper detector part and the lower detector part are connected through a wire; an antenna II is arranged on the upper detector part; an arc-shaped optical sensor, a laser transmitting port and a laser receiving port are arranged on the detection disk of the upper detector part; and an arc-shaped optical sensor is arranged on the detection disk of the lower detector part. The wireless measuring instrument is mainly used for switch cabinet moving contact insertion depth detection.