In recent years, Since the windows kernel security has been highly regarded .the Microsoft enhance the windows kernel security, the kernel issue is fewer and fewer ,and it is more harder for the security researchers to find the kernel issues, So I develop a tools to help the security researchers fuzz the kernel. At first , I will introduce the new method for fuzzing windows kernels. And I will show the fuzzing framework, how it works, will discuss the method for fuzzing windows kernel. The fuzz focused on windows kernel objects, and the relationship with different object, This paper will cover the GDI object and some other windows kernel objects .And I will show some crash cases that I found via the fuzzing framework. At last, I will share some windows crash details, and show a exploit demo that I complete last year.