In view of the large amount of arrears caused to the original OCS users after the OCS users move up, the project improves the core ability of message billing by creating a unified service management platform for message billing users. On the basis of the existing reminder SMS, the platform enriches the real-time reminder content of SMS, gives full play to the advantage of timely message billing, and greatly reduces the huge arrears of users through soft credit control strategy, so as to improve user service perception.