The invention discloses a washable heating vest. The vest comprises a heating unit, a protection unit, a control unit and a circuit unit, the heating unit comprises a plurality of carbon nano tube film layers arranged at interval, two adjacent carbon nano tube film layers are parallel to each other, the protection unit comprises a thermoplastic elastomer layer and a silvered reflecting layer, the circuit unit comprises a U-shaped FPC board, the two ends of any carbon nano tube film layer are electrically connected with the two ends of the FPC board respectively, and the thermoplastic elastomer layer, the carbon nano tube film layers, the FPC board and the silvered reflecting layer are arranged in sequence in a stack-up mode. The washable heating vest at least has the following advantages of being high in heating efficiency, good in comfort, washable, soft in texture and long in service life.