The invention discloses an integrated double concrete supplying and pouring system and supplying method. The supplying system comprises a stirring truck and a pump truck, wherein the stirring truck isprovided with a stirring barrel and a sealing end cover, the pump vehicle comprises a closed supplying system, the stirring truck and the pump truck are communicated through a closed supplying pipe and a feeding pipe, so that a communicated concrete fluid with pressure difference is formed, and concrete in a receiving hopper of the pump truck is endowed with lasting supplying pressure. Integratedand concentrated control of the stirring truck and the pump truck is realized by connecting operating systems of the stirring truck and the pump truck. Integrated and automatic operation of the stirring truck and the pump truck is convenient to realize, the concrete pouring construction efficiency is improved, water adding in the pumping position due to concrete water evaporation and slump loss is also avoided, the concrete quality is ensured, overflow leakage of the concrete at the receiving hopper is eradicated, the thermal insulation effect is improved, and the purpose of continuous concrete supply to the pump truck under certain pressure conditions is achieved.