Abstract: The carbonate reservoirs in Tarim Oilfield are generally characterized with strong heterogeneity, complex relation between natural fractures and pore space, and unacceptable acid-fracturing effect in the reservoir with poor fissures and pore. On the basis of analyzing the characteristics of acid-fracturing and sand fracturing, the research and field trials of acid-adding proppant fracturing is proposed. The slurry of acid-adding proppant fracturing is crosslinked acid, compound artificial fractures with acidizing etch and propping agent are formed, which enlarges the contact area between reservoir and fractures. Because of the good rheological property of heat-resistant and carrier performance, high viscosity and sand laden are kept during treatment. Based on the acid-rock reaction and conductivity experiments, different acid strength of crosslinking acid is used to transport proppant in different treating stages with the purpose of high fracture conductivity. Eight wells have been treated by this technique, with a construction success ratio of 100, as this technology integrates the advantages of acid fracturing and prop fracturing, a new approach to develop lean carbonate reservoir is promising in Tarim Oilfield.