Juice clarification technology is one of the key technologies for juice processing. The study focused on the clarification technique conditions of pear juice clarified by chitosan. Through the insertion of single-factor experiment studied chitosan’content, clarify time, the temperature of the juice to impact the pear juice clarify and selected appropriate parameters: chitosan were 0.20g/L, clarify time was 1h, the temperature of the juice was 35℃; By orthogonal experiments to clarify pear juice processes optimize conditions. The results showed that the optimum technological conditions of pear juice clarification by using35℃, chitosan were 0.28g/L and 1h, the transmittance was above 97%, with natural colour and good flavor.