This invention discloses a smart integrated monitor for pressure flow of air source system, comprising simulated air source, a control valve, a pressure reducer, a regulating valve, a relief valve, a draft tube, a pressure detection device, a pressure transmitter, a flow sensor, simulated load and a control system. The simulation air source is connected with the test pipeline the through the control valve. There are at least two test pipelines, which are connected parallel to each other. Each test pipeline is connected with at least one simulation load. The test pipeline consists of a draft tube, a pressure reducer, a regulating valve, a relief valve, a pressure detection device, a pressure transmitter and a flow sensor. The control system comprises a data collecting device and a control computer platform. The smart integrated monitor for pressure flow of air source system can, on one hand, effectively improve the operation efficiency and detection accuracy of the gas source detection device, and on the other hand can effectively improve the integration of different detection data, and improve the flexibility and reliability of the gas source detection system.