The invention discloses a disassembling-and-assembling-facilitating anti-theft power cabinet comprising a power cabinet body which is composed of a top plate, a back plate, a bottom plate, a left plate and a right plate. The two sides of the front part of the power cabinet body are symmetrically provided with two sets of sockets fixed on the edge of the left plate and the edge of the right plate.A left cabinet door match with the power cabinet body is rotatably installed on the left side plate through the socket. A right cabinet door matched with the left cabinet door is rotatably installed on the right side plate through the socket. A transmission piece of a rectangular frame structure is rotatably installed on the inner wall of the left side plate and the inner wall of the right side plate respectively through a rotating shaft base. Matching eccentric wheels are rotatably installed around the transmission piece through the opened transmission holes. The eccentric wheels are connected with the rotating shaft base through a rotating shaft. The outer end surface of the eccentric wheels is connected with threaded connecting columns coaxial with the rotating shaft, and a magnetic locking piece is installed between one eccentric wheel and the rotating shaft base. The power cabinet can be quickly spliced to realize overall linkage disassembling and assembling so as to facilitate transportation, and the anti-theft effect is realized through the non-exposed anti-theft lock.