The invention relates to a pretreatment method of wine brewing waste water and belongs to the technical field of sewage treatment. In order to solve a technical problem, the invention provides a pretreatment method of wine brewing waste water, and the method can reduce treatment cost on wine brewing waste water. The pretreatment method of wine brewing waste water of the invention comprises the following steps: a. before entrance of the wine brewing production waste water into a sewage disposal system, mixing the wine brewing production waste water with excessive pulverized limestone or cooked pulverized limestone and reacting completely; b. filtering to obtain a solid matter and a filtrate, and sending the filtrate into the sewage disposal system.