The present invention relates to an automatic dispenser for liquid toilet disinfectant. The automatic dispenser of the present invention comprises: a bracket having a fastening hole formed in a front surface of a side thereof, and a hanging hook formed extending from a top portion thereof to enable the bracket to be positioned and fixed at the edge of a toilet water tank a cylinder fixed and installed on the bracket through the fastening hole, and including a guide space portion provided within, an input hole formed in an upper side surface thereof and a hole that communicates with the toilet water tank formed in a lower side surface thereof spaced a predetermined distance apart from the input hole, and guide pieces extending in parallel on sides thereof a disinfectant container coupled to the input hole at the top of the cylinder and storing disinfectant therein a piston installed so as to be capable of sliding within the cylinder, including a space portion provided in the central portion of a side thereof to store disinfectant, and holes at the top and bottom thereof through which disinfectant is injected and discharged, and having one side end projecting onto a guide piece of the cylinder a semicircular eccentric cam rotatably supported on a shaft between the guide pieces of the cylinder, for pressing against the piston as it rotates and a float having one end fixed on the semicircular eccentric cam and the other end disposed on the surface of the water in the toilet water tank, wherein a uniform amount of liquid disinfectant can always be supplied into the toilet water tank so that regular disinfecting and cleaning are made possible. Also, because automatic input is made possible by flushing water, liquid disinfectant can be easily introduced, and the dispenser can be continually used by replacing only the disinfectant container.La présente invention se rapporte à un distributeur automatique dun désinfectant liquide de toilettes. Le distributeur automatique de l
