To continuously improve the relationship with members of the formal dining industry and reduce the risk of member churn, a targeted SaaS（software as a service） solution and application strategy were proposed through an analysis of the current status of customer life cycle management. The practical feasibility of SaaS application in the life cycle management of dinner customers was verified with the case of ES Huaiyang cuisine restaurant. The empirical research results indicate that the life cycle management of dinner customers based on digitalization of restaurant can significantly reduce the number of lost customers and promote the growth of single-restaurant performance. Therefore, this management strategy based on store digitization has important practical application value and promotion significance for formal dining enterprises.