Android mobile devices and mobile applications testing are very common and very important. This paper begins with a brief analysis of android mobile phone testing situation, then proposes an automatic testing system based on phone remote control is to solve the current problems. Then it introduces the features, architecture, technology and automated script execution flow of the system. Practice shows that the system can improve test efficiency and accuracy of test results, reduce the technical requirements for testers, overcome the shortcomings of the ordinary phone automation testing tools.