The invention belongs to the technical field of computers, and particularly relates to a Java-based cluster performance test method and system. The method comprises the steps of employing a JSP simulation test page to create a performance test instruction; generating the batch computing tasks according to the performance test instruction, and calling a JNI front-end agent interface to cache the computing tasks; enabling the JNI front-end agent interface to select an optimal cluster node and send the calculation task; enabling the optimal cluster node to receive and execute the computing task;obtaining a calculation result of the calculation task, and recording each piece of performance data; and displaying various performance data of the cluster by using the JSP simulation test page. According to the performance test method, a visual and easy-to-use performance testing interface is provided for a non-Java accelerated computing cluster through a JSP page and a JNI interface; and a WEBbrowser is adopted as a test interface, so that the development difficulty is low, the use is convenient, and the cross-platform test can be realized.