Abstract: The alcohol fracturing fluid prepared with low molecular weight alcohols can be used in low permeability tight reservoirs to promote flow back, effectively relieve water locking, and increase production of wells. The influence mechanism of alcohols to hydroxypropyl guar gum swelling and crosslinking reaction was analyzed. Special solubilizer and crosslinking promoter have been developed, the alcohol fracturing fluid (alcohols amount up to 20%) have been successfully prepared by HPG. The fluid system was applied on tight sandstone gas reservoir in JN gas field, and the effect was superior to the adjacent wells of similar reservoirs.