In order to achieve long-term and stable development, the firm must constantly innovate its business development model, and cross-border mergers and acquisitions and equity investment are one of the most important ways. Under the current international economic situation, many companies are engaged in cross-border mergers and acquisitions. The current international situation provides more opportunities for the development and implementation of cross-border mergers and acquisitions and equity investment, but it also faces many risk factors. Therefore, companies should reduce the risk of M&A and create favorable conditions for cross-border M&A and equity investment.