Organic boron crosslinking agent has large consumption of gel breaker and has high residue content after gel breaking, which goes against the flow back of fracturing fluid. Traditional fracturing fluid system with inorganic boron crosslinking agent has poor temperature resistance. Aimed at improving temperature resistance performance of inorganic boron crosslinking agent, developed are high temperature inorganic boron JLW-HT1 crosslinking agent and compounded is the fracturing fluid system by using the agent so as to reconstruct low permeability gas reservoir. Results obtained from laboratory evaluation and field application show that this fracturing fluid system has low residue content after gel breaking, which is beneficial to the flow back of fracturing fluid, will result in low damage and has good high temperature rheology. This fracturing fluid system can be used in different scales’ fracturing operation of high temperature deep well in low temperature in Ordos Basin.