Abstract: The orthognoal processing experiment and its green-maintaining effect on the green brake in the South China were explored.The results showed that：blanch the brake for  5～6　min in the 0.01%～0.1% citric acid and 0.5% NaCl water under no less than 85 ℃,and harden it for 30～60　min in 0.5%　CaCl2 water,and then enclos with the 0.01%～0.1% compound green-maintaining reagent-D sap without  pasteurization to the green brake,the green-maintining effect reaches the advanced level of brake merchandise in domestic market.

Key words: brake, green-maintaining, processing technology