For fenugreek gum thickener,now using sodium tetraborate,butyl titanate, triethanolamine,glycerin and glycol as raw materials,organic titanium boron crosslinking agent was synthesized,and fenugreek gum fracturing fluid was prepared. The study has studied the effects of the main agent and ligand material ratio,reaction temperature and reaction time on the properties of crosslinking agent gelling.The results showed that the m(sodium tetraborate):m(butyl titanate)=1:4,m (triethanolamine):m(glycerin)=1:2,reaction temperature 70℃,reaction time is 3h, crosslinking agent has the optimal performance.Examined the w(fenugreek gum solution)=0.4%,crosslinking ratio m(fenugreek gum solution):m(titanium boron crosslinking agent)=100:(0.4~0.6),the fenugreek gum fracturing fluid performance shows that:the delayed time was 150s,the shearing resistance and temperature tolerance were good;Under normal temperature,when the sand ratio was 30% in volume,the settling velocity was 0.009mm•s-1;Gel breaking liquid viscosity is lower than 5mPa•s,and it is less damage to the reservoir.