The invention provides a detachable power cable anti-termite plugging device, and relates to the field of power equipment. The detachable power cable anti-termite plugging device comprises a sealing device, a second connecting pipe, a smearing device, a fourth connecting pipe and a fifth connecting pipe. A wire fixing device is arranged on a first connecting pipe. One end of the first connecting pipe is connected with one end of the second connecting pipe. The wire fixing device is arranged in the first connecting pipe. The other end of the second connecting pipe is connected with one end of a third connecting pipe arranged on the smearing device. A smearing insecticide box is arranged in the third connecting pipe. The other end of the third connecting pipe is connected with one end of the fourth connecting pipe. The other end of the fourth connecting pipe is connected with the fifth connecting pipe. The detachable power cable anti-termite plugging device is simple in structure and convenient to operate so that anti-termite plugging of the power cable can be realized, detaching and replacing can be performed, installation is convenient and the novel plugging device can be repeatedly used, the plugging device can be suitable for anti-termite plugging of various tunnels and incoming wires of cabinet cables and thus the plugging device has significant engineering value and economic benefit.