Abstract: The W30 B reservoir is a structural lithology-controlled edge water reservoir. After the well pattern infilling, five-point water injection method was adopted. The main purpose of the fracturing operation is to remove the pollution problem in the near-wellbore area. Under the condition of fully understanding the geological characteristics of the reservoir, various fracturing process adaptability was analyzed, the construction parameters were precisely optimized, and a set of precision fracturing transformation technology was formed. In addition to effectively controlling the height of fractures, the actual demands such as the operating degree of each small layer are maximized, which improves the effective operating degree and reservoir development benefits of this block.