The flashback of Sichuan tax app is due to insufficient running memory. According to the inquiry of relevant public information, Sichuan Tax app needs a mobile phone rack running more than 2G memory to run normally, and running less than 2G memory will lead to flashback. Tax is the abbreviation of tax. There are broad sense and narrow sense. In a broad sense, taxation refers to taxation based on state power, and participates in all the work in the whole process of national income distribution, including the research, formulation, publicity, implementation and enforcement of tax policies.