A toilet crutch chair can be folded and unfolded to switch between a crutch state and a toilet chair state. The toilet crutch chair includes a seat with a toilet hole, a folding support unit, and a folding support. The unit extends upwards to hold the unit. The folding support unit is provided for the seat cushion and extends downward from the seat cushion. In the state of the toilet chair, the folding support unit is deployed to spread the seat cushion, and is suitable for being disposed on the outside of a toilet and surrounding and defining a communicating toilet. The upper space and the toilet passage of the toilet hole, in the state of the crutch, the folding support unit is folded and substantially columnar. Thereby, the user can fold the toilet crutch chair into the crutch state while supporting the body weight when walking, and can expand the toilet crutch chair into the toilet chair state when the user needs to use the toilet And assisting the toilet can greatly improve the convenience of the elderly or people with reduced mobility when using the toilet.