Based on the sample of Chinese A share listed companies from 2007 to 2020, this paper discusses the impact of corporate internationalization strategy on the accuracy of management earnings forecasts. It is find that there is not a simple linear correlation between the corporate internationalization strategy and management earnings forecasts bias, but a correlation similar to the U shaped curve, which shows that with the increase of the degree of international operation, the deviation of management earnings forecasts will show a trend of first decrease and then increase. The mechanism tests show that the U shaped changes of enterprise operation risk, earnings manipulation motivation and agency cost caused by the implementation of internationalization strategy are the important reasons for the above U shaped curve relationship. Further analyses show that the above U shaped relationship mainly occurs in non state owned enterprises, enterprises with low shareholding ratio of foreign shareholders, non dual supervision enterprises, enterprises with poor analyst governance and poor auditor governance. The research conclusions have practical significance for guiding the securities regulatory authorities to guard against the risk of management earnings forecasts fraud of international operating enterprises.