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It is an urgent need to solve the problems of diagnosing the fault under the oilfields accurately and achieving oil extraction system’s digital and intelligent in the opening up oilfields. Through the analysis of the indicator diagrams to diagnose sucker rod pump failure is a major means to analyze the condition of pump in oil field. At present, it is still on people to recognize the indicator diagram no matter at home and abroad. Although the technology of computer identification has been implemented, however, it has not been promoted due the limited of its accuracy. So, based on the research of literature the fault diagnosis of sucker rod pumps is summarized. firstly introduces the evolution of the technology of sucker rod pump’s fault diagnosis, then analyzes the technology of the recognition of indicator diagram at home and abroad, including the transformation model of the pump indicator diagrams, the characteristic values extraction methods of pump indicator diagrams and the matching methods of characteristic values, and points out the main problems existing in the fault diagnosis of the sucker rod pump and indicates the improvement direction of the future. 