Abstract: The market-oriented allocation of capital factors is the core content of a sound socialist market economic system. How to better realize the financing needs of enterprises constitutes a key link in the high-quality development of microeconomic entities. In this paper, a quantitative method of large sample empirical regression was used to study how the establishment of strategic alliance between enterprises and banks as the marketization mechanism affected corporate financing constraints. The study finds that the establishment of strategic alliance between enterprises and banks can significantly alleviate the degree of financing constraints, and this effect is more obvious when companies are privately owned, have non-group control, have a lower degree of marketization or when they are experiencing a period of monetary policy tightening. Further research shows that the strategic alliance between enterprises and banks eases financing constraints by reducing the degree of financing difficultly of enterprises. And the market value and production efficiency of enterprises that have effectively eased financing constraints through the bank-enterprise alliance have been significantly improved. However, at the same time, this paper also finds that there is an even higher cost of financing after the establishment of strategic alliance between enterprises and banks, where enterprises need to pay higher loan financing costs in exchange for timely and stable credit funds after the establishment of enterprise-bank alliance, that is, enterprises will weigh “financing difficultly” and “high cost of financing” to achieve their development by forming bank-enterprise alliance.