Stoma impurity removal device convenient for patient to replace by himself/herself

The invention relates to the technical field of stoma impurity removal tools, in particular to a stoma impurity removal device convenient for patients to replace by themselves, which comprises a stoma paste, a stoma bag is detachably mounted on the stoma paste, the stoma bag comprises two mutually symmetrical bag bodies, the two bag bodies are communicated through a bottom communication bag, an arc-shaped sleeve cover is fixedly mounted on each bag body, and the arc-shaped sleeve covers are fixedly mounted on the stoma paste. The stoma paste comprises an adhesive paste, a discharge ring is fixedly installed at the center of the adhesive paste, a rubber sealing ring is fixedly installed on a ring body at the front end of the discharge ring, the discharge ring is sleeved with the arc-shaped sleeve cover, the arc-shaped sleeve cover is rotationally connected with the discharge ring, an arc-shaped hole is formed in the bag body, and a clamping groove communicated with the outside is formed in the fixing protrudin