The invention discloses a low-voltage current wireless checking instrument. The instrument includes a current detection clamp. A clamp holder and a display screen are arranged on the two ends of a housing of the current detection clamp. A detection module for receiving clamp holder detection signals is arranged in the housing, and is electrically connected to the display screen through a signal wire. The structural characteristics are that a wireless transmit-receive module is arranged in the housing, the signal input end of the wireless transmit-receive module is in parallel connection with the signal wire through a data line, the output end of the wireless transmit-receive module is electrically connected to a signal antenna, a battery for supplying power to the detection module and the wireless transmit-receive module is also arranged in the housing, the instrument further includes a host that wirelessly communicates with the wireless transmit-receive module, and the signal end of the host is electrically connected to a host antenna. The advantages and beneficial effects are that the instrument has a reasonable structure, can assist in detecting currents of lines in many positions at the same time, is easy to operate, is convenient for detection, is labor-saving and time-saving, can quickly determine a detection result, only needs one person to operate, and enables the detection efficiency to be improved.