Factory culture system capable of improving water quality through self-circulation purification

The invention provides a factory breeding system capable of improving water quality through autonomous circulation purification, and relates to the technical field of sewage purification. A cover plate is buckled on the purification box, and a liquid supply pump for supplying a decomposing agent is mounted on the cover plate; the purification box is connected with a discharge pipe, the discharge pipe is connected with a connecting pipe, and the connecting pipe is connected with a filter box; and the infusion pump is mounted on the ground. Through the arrangement of a microprocessor and a timer, automatic control of an electric telescopic rod, a liquid supply pump, an infusion pump and an air supply pump for aeration can be achieved, timing can be conducted through the timer, and automatic treatment of sewage is achieved on the basis that electricity is saved; the problems that in the decomposition process, if the contact effect of sewage and a decomposition agent has a space for improving the contact effect,