Abstract: X well field is located in the east of Junggar Basin, which is a medium porosity, low permeable and deep zone heavy oil reservoir. The oil layer is loose and brittle, and the oil has high density, high viscosity, low freezing point and so on. So, it is very difficult to exploit this reservoir. For the development of such reservoir, secondary sanding fracturing is required so as to form a high flow conductivity fracture which is shorter and wider. At first, connected with prophase fracturing construction data of 13 wells in X well field, FracproPT software is used to simulate the construction of secondary sanding fracturing. Besides, fracture conformation parameters are compared and analyzed between the secondary sanding fracturing and conventional fracturing. Finally, the construction parameters of secondary sanding fracturing are optimized, such as secondary sanding proportion, pump off time, delivery capacity and sand. The result demonstrates that the fracturing construction simulation of X well field is very accurate with FracproPT software, secondary sanding fracturing is in favour of controlling fracture height effectively, expanding fracture width and it also has an effect of enhancing fracture conductivity. This research has certain guiding significance to optimize the secondary sanding fracturing design of heavy oil reservoir and to improve stimulate effect of secondary sanding fracturing.