Parallelizing compiler can transform serial programs to parallel programs automatically or semi-automatically. The up-to-date automatic parallelizing systems cannot generate parallel codes as good as hand coding for many applications. The main reason is that they cannot manipulate the complexities of real applications. What's more, there are some semantic information in the program that the automatic tools can never know without user's knowledge. TIPS (Tsinghua interactive parallelizing system) provides some user-friendly interactive tools so that the compiler and user can cooperate with each other. It is an effective way to improve the capability and efficiency of parallelizing compiler.