The invention discloses a convenient-to-maintain power distribution cabinet. The cabinet comprises a cabinet body; a fixing plate is in lap joint with the bottom of the cabinet body; the left side andright side of the cabinet body are respectively in lap joint with a left side plate and a right side plate; a movable slot is formed in the upper surface of the fixing plate; a first fixed block located at the bottom of the left side plate is fixedly connected into the movable slot; the surface of the first fixed block is movably connected with the interior of the movable slot; a movement slot isformed in the upper surface of the fixed plate; and a second fixed block located at the bottom of the right side plate is fixedly connected into the movement slot. According to the convenient-to-maintain power distribution cabinet, the top of the cabinet body is provided with sealing plates; the sealing plates are adopted to seal a gap between the left side plate and the cabinet body and a gap between the right side plate and the cabinet body, and therefore, rainwater can be prevented from entering the cabinet body; and a spring and a push block are arranged between the left side plate and the right side plate, and therefore, the left side plate and the right side plate can be separated from the cabinet body more conveniently and effortlessly.