Abstract: Jimusar tight reservoirs have the characteristics of extra-low permeability, large thickness, thin sand-mud interbed development. At present, the main development technology is large scale staged fracturing with horizontal wells. To reduce the development cost, the ‘factory–like' fracturing pilot test of cluster horizontal well groups are applied in Jimusar sag. However, the existing well interference was incurred during the fracturing process, which directly affected the normal production of neighbor wells. The characteristics of fracture linear flow in fracturing horizontal wells were analyzed. According to the characteristics of the fracture linear flow, it can be concluded that the interference between wells could be estimated, whether it is the communication disturbance of fracturing fracture or the interference of the pressure. The reliability of the method is verified by comparing with the micro seismic monitoring results.