Microcomputer control seat mat is a new modern technical product that is warmly welcomed by many customers. It absolutely solves the problem of bacterial cross infection in public toilets. The seat mat can be widely used in public places, such as hotels, large shopping centers, airports, stations,especially in hospitals, restaurants and offices. Comparing with traditional toilet seat, the seat mat has the following advantages: 1. It can avoid the bacterial growing and stop cross infection by bacterium, ensuring 100% clean seat to the toilet users. 2. Each roll of film can be used more than 60 times. And the cost of hygienic sanitary film is low. 3. It can reduce the labor of toilet cleaning and the consumption of paper and water. 4. Normal style toilets in the market can be easily added the seat mat without changing the toilet itself. The installing method is similar to that of the normal one.