Taking all the A-share listed companies from 2006 to 2015 as sample, on the basis of the panel data of 1225 companies screened out and the fixed-effect model, this paper makes an analysis on the relationship between the monetary policy, enterprise life cycle and bank credit. The results show that：（1）the enterprises with different life cycle stages have different bank credit, among which the growing enterprises have the most bank credit, the second are those in the recession period, the least are those in the maturity period; （2）Monetary policy has different effects on enterprise’s bank credit in different life cycle stages. Specifically, the impact of monetary policy on the declining enterprises and mature enterprises is relatively large, relatively speaking, the impact on the growing enterprises is relatively small. The conclusion of this paper provides some reference for enterprises in different life cycle stages how to conduct bank credit financing under the circumstance of monetary policy change.