Abstract: In recent years, the separate layers sand fracturing technique have got more and more attention and application in the reformation of more than 2 layers of the low permeable sandstone oil and gas reservoir. This paper presents the applied conditions and characteristics of the technique, and emphatically introduces the principle and process flow of the separate layers sand fracturing technique by combining its application in Yao 9 well. The application shows that the technique can lower the operation cost, improve the oil well deliverability and efficiency, and is worth spreading.