The Putaohua reservoir in Taizhao area is the typical low-permeability reservoir which developed EW, SN, NW and NE tectonic fractures with high angles in the periphery of Daqing Oilfield. The development degree of above four group fractures in succession die down. By effect of modern stress field of approximately EW direction, the connectedness, opening and permeability of EW fractures are the best, then are NW and NE fractures, and that of SN fractures are the worst. The development degree of fractures are controlled by lithology, thickness, fault and tectonic stress. The effects of fractures on development include pattern arrangement, injecting water and fracturing. According to geological condition and numerical simulation of oil pool, the development effects of similar low-permeability reservoirs by rectangle and lozenge well pattern are better than by inverted 9-spot well pattern and 5-spot well pattern. Due to development of fractures in low-permeability, the stratum cracking pressure reduces, which is liable to be exceeded by the injecting pressure. This will make injecting water to flow fleetly along fractures, and cause water flooding, influenceing development effect. Therefore, it is very important to control injecting pressure in the development of low-permesability reservoirs. The artificial fractures are controlled by the modern stress field and natural fractures in fractured low-permeability reservoir. According to fractures and their seepage characteristics, three sets of adjustment schemes can be adopted on the basis of existing inverted 9-spot well pattern. At the same time, good effects can be obtained by early mild injecting water, controlling injecting pressure, linearity injecting mode, dynamic preparing water, pulse cycle injecting, perfecting pour and pick system, well pattern adjustment, choosing fracturing well and controlling fracturing scale, etc.