Horizontal well multi-stage fracturing is one of the key technologies for the efficient development of unconventional oil and gas reservoirs. However, some well pads are limited by factors such as reservoir distribution and environmental protection, making it impossible to arrange wells conventionally. A new fan-shaped well network layout model was proposed to maximize the utilization of reserves in this type of reservoir. This study derives an analytical solution for the induced stress distribution of multiple wells and fractures in a new fan-shaped well network at any angle. The indoor hydraulic fracturing experiments on the fan-shaped well network were conducted to study the crack propagation law of adjacent horizontal wells in the fan-shaped well network, verify the model 's accuracy, and divide the risk zone of the fan-shaped well network. The results indicate that the change in angle between the horizontal well and the minimum horizontal principal stress affects the initiation and propagation of cracks. As the angle increases, the fracture morphology becomes more complex. The measured deflection angle of the crack is in good agreement with the theoretical calculation of the main direction, and this analytical solution can predict the direction of crack propagation. Due to the variable well spacing feature from the toe to the root of the fan-shaped well network, the new cracks at the root of the horizontal well are subjected to greater stress shadows from the old cracks in adjacent wells. According to the fracture morphology, the fan-shaped well network is divided into low-risk areas (the deviation angle of the horizontal well is less than 45°), medium-risk areas (the deviation angle of the horizontal well is 55 °-65°), and high-risk areas (the deviation angle of the horizontal well is greater than 75°).