Combing acid fracturing with proppant can achieve the high fracture conductivity of fracturing with sand and multi-fracture system of conventional acid fracturing. Performance of acid system has significant influence on treatment effectiveness. In view of the present situation of lack in crosslinked acid system suited to be applied in deep and high temperature formations, a novel high temperature resistant and proppant transportable crosslinked acid system was developed based on laboratory research. The formulation was as follows, 20% hydrochloric acid +1.0% thickener YT-217+1.6% crosslinking agent JQ-1+0.4% crosslinking agent JP-2+2% high temperature corrosion inhibitor JG-1 + 1% cleanup additive JZ-1 +1.5% ferric ion stabilizer JF-1.The experimental results showed that crosslinking time of the system was 95 s, indicated that the system possessed the crosslinking-delay properties. The fluid system had a good temperature and salt resistance performance, the viscosity of the system could maintain up to 50 mPa?s after sheared at the temperature of 150℃and the shear rate of 170 s-1 for 120 min. Furthermore, the system exhibited the peculiarity of completed gel breaking, good compatibility with formation and strong proppant-carrying capacity, which ensured that the fluid system could meet the requirements of the fracturing treatment.