The invention discloses a nursery pond water circulation fertilizing device with heating function. The nursery pond water circulation fertilizing device comprises a nursery pond, a water pump, a heating device, a control device, a venturi tube, and a fertilizer tank; one end of the water pump is connected with the nursery pond via a water pump pipe, and the other end is connected with the heating device and a three-branch pipe via a water outlet pipe successively; the right end of the three-branch pipe is connected with the venture tube and a filter successively, and then is connected with the nursery pond; the lower end of the three-branch pipe is connected with an adjusting water valve and the fertilizer tank successively; the fertilizer tank is connected with the venturi tube via a fertilizer suction pipe; the control device is used for controlling the water pump and the heating device to work; the water pump is used for pumping water in the nursery pond into the heating device for heating; when heated pond water is delivered through the venturi tube, fertilizer in the fertilizer tank is sucked up automatically by the fertilizer suction pipe, is mixed, is filtered using the filter, and then is delivered back into the nursery pond; when water temperature reaches a set value, disconnection of power is realized automatically by the control device, and the water pump and the heating device are turned off; diversion of water in the water pump into the fertilizer tank for dissolving of fertilizer is realized via on and off of the adjusting water valve, so that it is convenient for the fertilizer suction pipe to suck up fertilizer.