The invention provides a method for simulating fracture hole seepage of a K gas reservoir, which comprises the following steps of: establishing a three-dimensional two-phase well group numerical simulation mechanism model considering an inter-well fault according to gas reservoir structure, reservoir and fluid characteristics in combination with actual well group interference well testing data, and obtaining pressure propagation characteristics and water invasion characteristics of the K gas reservoir. According to the method for simulating fracture hole seepage of the K gas reservoir, the influence of the inter-well fault is considered, the seepage characteristics of the K gas reservoir are researched, and therefore gas reservoir fracture characteristic understanding and water invasion rule research can be deepened, and reasonable development of fractured oil and gas reservoirs can be achieved.