A toilet used in outer space comprises a housing, a gathering system and a collecting system installed in the housing, wherein the gathering system is an electric feeding mechanism with a conveying channel, a spiral shaft, an inlet member fitted to the conveying channel, and an outlet member formed on the conveying channel, the spiral shaft is placed in the conveying channel to move axially relative to the conveying channel, and includes a cleaner located below the conveying channel and inserting through the conveying channel having a sleeve member fitted to an output gear thereof, and the sleeve member actuates the spiral shaft to rotate via a pillar and includes a tab disposed on an inner wall thereof to correspond to the spiral groove, between the pillar and the conveying channel is defined a compression spring; the gathering system being connected to the outlet member.