The portable defecation assistive equipment comprises a collecting receptacle, a guiding cover, and a pump motor. The collecting receptacle has an opening and a handle. The guiding cover is connected to the collecting receptacle and has a guiding hole. The guiding hole communicates with the opening of the collecting receptacle. The pump motor is connected to the collecting receptacle. The portable defecation assistive equipment has a wing radially formed around the guiding cover, such that the wing and guiding cover can seal the buttock of the user to maintain the negative pressure condition and avoid the reduction of attraction force. The portable defecation assistive equipment adopts a pump motor having smaller attraction. So the portable defecation assistive equipment has no need to adopt an additional pressure regulator valve, the structure is simplified, and the risk of the breakdown of the pressure regulator valve is avoided.
