I. Introduction
In recent years, with the rapid development of Internet technology, web application system has been widely used in business, industry, banking, finance, education, government, entertainment and other industries, which has a wide impact on people's work and life[1]. The number of users of many websites reaches tens of millions or even hundreds of millions, the scale of web application software is expanding, and the web complexity is increasing gradually. The problem is the rapid growth of web site traffic leads to the slow response of some frequently used web sites due to the overload. When the site's performance defects reach an intolerable level, it will cause users to terminate their transactions on the site prematurely. For commercial websites, users abandoning their websites will result in reduced revenue[2]. In the network environment, the database server, application server, the realization of business logic, the system architecture, the degree of code optimization and the user's mode of use will affect the performance of the system[3]. How to simulate the high concurrent user environment under the limited human and material resources to measure and verify the performance of the system effectively has become a major problem which testers are facing. Using high efficiency and low costs automation testing technology is an indispensable part of web performance testing. The performance automation testing technology based on JMeter is discussed below, which shows its flexibility and effectiveness.