With the rapid development of economy in recent years, M&A has become a trend. Mergers and acquisitions have become an important means and positive way to promote the optimal allocation of resources and realize the reorganization of property rights, and more and more enterprises in China appear. However, there are a lot of risks in the process of merger and acquisition, among which financial risk is an important factor affecting the success of merger and acquisition. This paper analyzes the financial risks in mergers and acquisitions. And put forward the risk avoidance strategy, which makes the enterprise merger and acquisition more effective. Enterprise merger and acquisition has practical significance and value.