The invention belongs to the technical field of internet test, and particularly relates to an automatic test system. The automatic test system comprises an interface management module, a use case management module, a task management module, a test environment management module, a tool module and an authority management module, wherein the interface management module is used in information configuration of an invoking address and a communication protocol of an interface, the use case management module is used to create test use cases, upload a use case file and modify corresponding use case information, the task management module is used in creation of a test task, selection configuration of an interface case, notification of a modification task and creation of a task expression, the test environment management module is used to configure information of a test environment, and a port and a database which are invoked by the interface, and the tool module is used to configure public services of the interface and the use case management module. The automatic test system is high in efficiency and saves time in an automatic regression test, and furthermore is convenient to debug due to the fact that test personnel use the interface to configure and organize the cases.