High-efficiency high pressure gas leak detection method

The invention provides a high-efficiency high pressure gas leak detection method, comprising the generation process of high pressure tracer gas and the detection process of the leak tightness of a joint on a device or a pipeline by the high pressure tracer gas; in the generation process, a container is filled with quantitative tracer gas, then liquid with pressure is led into the container, and the liquid is used for compressing the tracer gas to facilitate the pressure of the tracer gas to be raised to a set pressure value so as to turn into constant pressure tracer gas; in the detection process, inner confined space and outer confined space are established on the joint to be detected on the device or the pipeline to be detected, the inner confined space is at least provided with an inlet for injecting the constant pressure tracer gas, the outer confined space is provided with a port which is connected with a detector, and whether the tracer gas leaking from the inner confined space exists in the outer confined space is detected by the detector. The invention finds a very reliable method for petroleum industry field high pressure gas detection and achieves the aim of field leak detection by combining various processes.