In the field of communication technologies, a fixing device for a holding pole is provided, so as to solve the problem of increased mounting cost due to too much manpower occupied by mounting the fixing device for the holding pole. The fixing device for the holding pole includes a first fastener, a second fastener, and a securing member, two ends of the first fastener are radially engaged with two ends of the second fastener to form a ring, and the securing member rotatably runs through the first fastener or the second fastener to reach the inside of the ring.