There are obvious differences between different layers of geological characteristics on the longitudinal in Jiaoshiba block of Fuling shale gas field, especially the upper layers ( above the ① - ③ layers) , which have low brittleness index and well developed high conductive fractures. On the basis of the comparison of the geological conditions of the upper and lower shale gas layers, the technical difficulties of fracturing in the upper shale gas layers are analyzed and the technical countermeasures are put forward. By carried out stress interference simulation, internal net pressure calculation and indoor fracturing simulation, a fracturing optimization method was proposed, which use pre-gel to increase the rupture, low viscosity slick water to make complex fractures and optimized displacement to control the height of fractures. This method can fully utilize the upper gas layer and reduce the redevelopment of the lower gas layer. With this fracturing technology, the upper shale gas well JYC-1 HF used Ø8 mm nozzle to flare and flow, the maximum gas production reached 163,400 cubic meters and the wellhead casing pressure was 17. 58 MPa. Before and after fracturing, the lower gas well’s gas production volume and pressure of JYC-1 HF were stable. It provides technical reference for fracturing process optimization of upper gas layer in Fuling shale gas field.