The invention relates to a real-time library testing method and system, and belongs to the field of automatic testing, and the method comprises the following steps: generating a corresponding number of threads according to selected parameters during the concurrent testing, enabling each thread to call a real-time library client write interface, and writing test data into a real-time library clientdata interaction interface; and after receiving the data returned by the real-time library server through the real-time library client data interaction interface, calling a real-time library client reading interface to read the returned data, judging whether the test data written in each thread is the same as the corresponding returned data, and counting the same or different thread numbers. Themethod is very convenient, depends on several basic interfaces of a plurality of threads and a real-time library client, does not depend on a very complete test environment, provides a simple and convenient test scheme, is simple and accurate in test process and high in efficiency, and further guarantees the test quality.