Using tetrabutyl titanate as the main agent, polyhydric alcohol as the complexing agent, a type of acid organic-titanium cross-linking agent was synthesized. HPAM is used as a thickener. The study has examined the effects of the content of butyl titanate, the ratio of complexing agent and the pH value on the delayed gelling and the viscosity.The performance of the organic titanium/ HPAM fracturing fluid shows that: the delayed time is 300s, the viscosity of the system was still higher than 50 mPa?s after shearing for 90 min at the temperature of 95℃ and the shearing rate of 170s-1, so the fracturing fluid possessed good temperature tolerance and shearing resistance. By the result of the dynamic frequency scanning, G’>G”, so it is a typical viscoelastic fluid. When the sand ratio was 30% in volume, settling velocity was 0.025mm/s. It is less harmful to reservoir because the viscosity of the gel breaking liquid is lower than5.0mPa?s and the residue content is low after gel breaking.