The development of outsourcing companies is stimulated by the digital trend of the industry and the penetration of
digital technology.They are striving to adapt to industry application scenarios,and improving software quality has become the focus
of outsourcing companies.This paper takes small outsourcing companies as the research object,adopts the Capability Maturity
Model Integration(CMMI)model to conduct a comprehensive design for continuous improvement of the outsourcing company’s
business processes,and evaluates software quality maturity capabilities through expert scoring methods,and selects some key
areas as indicators to build the model and the maturity ability level is determined.Taking the general business process of the
small outsourcing company as a benchmark,comprehensively evaluate its main key domain indicators,and analyze the improved
maturity level as IV,which provides a constructive basis for the small outsourcing company to further improve the software quality.