Control method of wort cooling top water recycling system

The invention discloses a control method of a wort cooling top water recycling system. The control method comprises the following steps: flushing hot water into part of water paths before a first batch of wort enters a wort cooler; then, wort is conveyed into a wort cooler to be cooled and flows to a fermentation tank, and the wort drives remaining hot water to enter a second water path and flow into a collecting tank; after the first batch of wort completely enters the wort cooler, hot water is conveyed to drive the retained wort to enter the fermentation tank, and the hot water flows into the collection tank through a third water path; the next batch of wort drives the detained hot water to enter a third water path and flow into a collecting tank; after the next batch of wort completely enters the wort cooler, hot water is conveyed to drive the detained wort to enter the fermentation tank, and the hot water flows into the collection tank through a third water path; hot water is conveyed to drive the detaine