Water users can choose a variety of recharge channels to pay water charges, and support the charging of different water meter types such as mechanical water meter, IC card water meter, remote water meter, Internet of Things water meter, etc. The system supports many national welfare and policies such as ladder pricing, multi-population families and low-income households. Can flexibly set up characteristic businesses such as "whether the valve is closed due to arrears" and "whether the valve is closed during holidays"; Abnormal water consumption can be analyzed, cooperate with the inspection system to automatically arrange personnel to carry out on-site inspection; After the top-up payment is successful, you can apply for electronic invoices through the public number and APP; Water supply and drainage enterprises can charge through the mobile terminal to check the water consumption of water users and find abnormal water consumption. The system supports sending short messages, public numbers and APP notices such as arrears, insufficient balance, abnormal water use, reminder, water cut-off, etc; automatically generate daily, monthly, quarterly and annual marketing reports; The system can be developed for the second time to be compatible with different brands of water meters and marketing systems.