The invention provides a method for removing a single-terminal traveling wave fault location dead area of a high-voltage power grid in a coal mine, and belongs to a method for single-terminal traveling wave fault location of the high-voltage power grid in the coal mine. A traveling wave instant power is defined; a fault feature wave tip is identified by means of a method that special wave tips are mutually verified, and a location dead area problem is solved; a calculation value of a circuit topological parameter known structure is compared with a measurement value, wave tips reflected by non-fault circuits are removed, and a reflection wave tip of a bus at the opposite end of a fault circuit and fault point reflection wave tips, namely the special wave tips are searched; by means of further classification calculation of the special wave tips, the function of removing the location dead area is achieved, meanwhile fault precise location is achieved, and the location errors are within 100 meters by means of large quantities of simulation and on-site data tests. The method has the advantages that the distinguishing degree of the traveling wave tips is improved under high noise in the practical power grid; in the power grid of the coal mine, by means of the method that the two special wave tips with faults are mutually verified, the problems that in circuits with mixed cables, the wave velocity is not consistent, and the wave tips are difficult to identify are solved.