The widespread use of hydraulic fracturing has resulted in a dramatic increase in the demand of fresh water and the treatment of flowback water. In order to relieve the shortage of water and decrease the cost of the waste water treatment of Xinjiang oilfield，the recycling technology of hydroxypropyl guar gum（HPG）fracturing flowback fluid was studied. The results showed that the rapid gel breaking and sterilization of the flowback fluid could be realized by electrolysis. The suspended matters were effectively removed by air flotation and settlement treatment. After adjusting the pH of the treated flowback fluid to about 6.5，the hydroxypropyl guar gum could disperse well in flowback fluid，and the base fluid could be quickly prepared with the flowback. The flash crosslinking caused by residual crosslinker could be eliminated by introducing a crosslinking delayer sodium gluconate and the crosslinking time could be controlled between 10—120 s. The high temperature stability of the fluid was improved by adding sodium sulfite to eliminate the residual breaking agent. In this method，about 2.2×104 m3 flowback fluid was treated to prepare HPG fracturing fluid，and was applied in the fracturing of 75 wells in Xinjiang oilfield with the bottom hole temperature of 22—97℃ with 100% operation success rate.