With the increasing function and complexity of smart energy meter software, the requirements for software testing and quality control in the development process are increasingly strict. Based on the software reliability requirements of smart energy meters, this paper analyzes the software system architecture, the traditional software test model and the emerging agile development test model, and proposes the "closed-loop feedback correction" model combined with the software development process of smart energy meters. Under the premise of strict control of key elements and risk control in the process of R&D, the model carries out efficient iterative work of parallel development test to achieve the purpose of improving software quality and development efficiency. The feasibility and efficiency of the proposed model are verified by the practical application of the reliability test in the development process of IR46 standard smart energy meter software.