An excrement automatic cleaning apparatus without taking it off comprises a fully automatic disposal apparatus and a toilet. The toilet is provided with a waste collecting area (911), an excrement and urine discharging opening, a hot water input pipe and a hot air input pipe. The fully automatic disposal apparatus comprises a housing, an evacuation barrel (1), a negative pressure device (2), a hot water device (3), a hot air device (4) and a control device (6). The fully automatic disposal apparatus is further provided with a packing device (5) which is connected with the evacuation barrel (1) and can seal and pack the excrement, the urine and the waste water. The toilet is self-adapting pants (9) made of a soft facing material. The waste collecting area (911) is arranged in the crotch of the self-adapting pants and made of a soft and water-proof material. The fully automatic disposal apparatus is further provided with a positive pressure device (7) which can fill the self-adapting pants (9) with air so that the waste collecting area (911) is expanded to form a discharging space. The toilet can be worn on a user for a long time. The user does not need any help from others during the defecation, and the sanitary disposal after the defecation is simple.
