As a preferred technology to enhance oilfield energy production, well stimulation has and will continue to have an important role in fulfilling the worlds future energy needs. Mud acid is a conventional acid system that reacts with most injurants and removes damages. However, fast reaction rate with minerals will lead to high leak-off velocity, great possibility of secondary and tertiary precipitation, lower effect of corrosion inhibitor in high temperature as well as short efficient operating range. Therefore, new kinds of acid system are required to cope with these problems above. This paper proposed three acid system with the similarity of fluorine ammonium compounds for sandstone acidizing ammonium hydrogen fluoride (AHF), ammonium fluotitanate (AFT), and ammonium fluoroborate system (AFB). Chemical structures, acidity test and solubility tests have proved the feasibility. Then, performance comparisons are conducted to prove the advantages over mud acid system.