A water source and ground source quadruple combined supply air conditioning unit comprises a heat recovery barrel type heat exchanger, an air conditioning side plate heat exchanger, a ground source side plate heat exchanger, a first water inlet pipe, a second water inlet pipe, a third water inlet pipe, a first water outlet pipe, a second water outlet pipe, a third water outlet pipe, a four-way valve, a throttling device, a compressor, a hot water tank, a buried pipe, a floor heating coil and a blower coil, wherein a hot water side water pump is arranged on the first water outlet pipe; an air conditioning side water pump is arranged on the second water inlet pipe; and a ground source side water pump is arranged on the third water inlet pipe. Compared with the prior art, the water source and ground source quadruple combined supply air conditioning unit can realize quadruple combined supply of air conditioner cold water, air conditioner hot water, floor heating hot water and domestic hotwater through switch among all components in different operation modes; and compared with the conventional air conditioners, water heaters and floor heating machines, the cost and the failure rate are lower, and the unit is more convenient to control.