The invention discloses a cleaning and containing cabinet for an electric power instrument. The cleaning and containing cabinet comprises a frame formed by four longitudinal supports. Supporting blocks are arranged on the inner sides of two longitudinal supports respectively, installing grooves are formed in the inner sides of the supporting blocks respectively, and an installing plate is arranged on the inner side of the frame. The installing plate is composed of two flat plates, the two flat plates are connected through a cross beam penetrating through the flat plates, a spring is arranged between the two flat plates, and the cross beam is sleeved with the spring. The four vertex angles of the installing plate are inserted into the corresponding installing grooves respectively when the spring is in a natural state, multiple through grooves are formed in the installing plate, adjusting bolts are arranged on the inner sides of the through grooves, the upper ends of the adjusting bolts penetrate through the through grooves, and a clamping part is arranged at the upper end of the installing plate. The instrument can be fixed, the instrument has better stability, and the instrument is not prone to damage when the supports shake.