The invention discloses a self-starting thermochromic dehumidification door. The self-starting thermochromic dehumidification door comprises a door frame and a door body, wherein the first face of the door frame is provided with air inlets connected with the hollow structure of the door frame; the second face of the door frame is provided with an air outlet connected with the hollow structure of the door frame, and the air outlet is provided with a fan; a humidity-sensitive actuating device is arranged at each air inlet and bends and deforms under a humid state to contact with the power lead of the fan so as to connect the power circuit of the fan; each humidity-sensitive actuating device recovers to the original shape in a dry state to separate from the power lead of the fan so as to disconnect the power circuit of the fan; the door body is made of thermochromic glass, and the thermochromic glass is nontransparent black when the temperature is above 35 DEG C and colorless and transparent when the temperature is below 35 DEG C. The self-starting thermochromic dehumidification door has the advantages that the color of the door can be changed automatically when the temperature changes to protect privacy, and the fan can be turned on or turned off according to humidity in a bathroom.