"One-card solution system" regards IC card technology as the core, uses computer and communication technology as means, to connect all the facilities of different systems into an organic whole, so users can use one IC card to deal with various ID authentication, consumption and query operations in life. One-card solution system is a type of intelligent management system that uses different functional equipments to achieve different functions. The different functions of equipments can be linked by one data line (can be called Internet or Internet of Things), and communicate through one data line with the management computer, to exchange different data in the same set of system software, on the same computer and in the same database, to achieve the issuance, recovery, report of loss and data query, etc. The use of various functions of the card is convenient, fast, safe and independent, and different functions have mutual communication; the system not only has the independence of each application management, but also has the consistency of overall management. The system can be divided into: city public transportation card, campus one-card solution, smart community one-card solution, enterprise park one-card solution, building management one-card solution and educational tourism one-card solution.