Detachable waterline separation device for closestool water tank

A detachable waterline separating device for a closestool water tank comprises a water inlet structure and a line inlet structure, the water inlet structure comprises a connecting base and a connecting pipe, the connecting base is provided with a water inlet hole and an upper separating part, one side of the upper separating part is provided with a first line groove, a plurality of first inserting grooves and a plurality of second inserting grooves, and the first inserting grooves are communicated with the connecting pipe. The lower end of the connecting base is connected with the connecting pipe in a communicating mode, a lower separation part is arranged on the outer side of the connecting pipe, and a lower wire groove communicating with the first wire groove is formed in the lower separation part; the wire inlet structure comprises a wire inlet fixing base and wires at the two ends, a second wire groove, a plurality of first inserting blocks matched with the first inserting grooves and a plurality of secon