The clarification of juice from Asparagus with ZTC1 + 1-Ⅱ natural clarifying agent was investigated and the effects of some factors such as the amount of ZTC1 + 1-Ⅱ clarifiers A and B,the temperature and the time on the clarification of the juice were optimized with the orthogonal design based on analyzing the single factor.The optimum of clarifying conditions was as follows: 3hours in 8% clarifier B and then adding 4% clarifier A for another 3 hours.Under these conditions,the extracting solution was clear and stable.