The invention discloses a method for protecting consumers' privacy when generating coupons, which includes: long-term tracking and acquisition of each consumer's consumption behavior to establish a large database of consumption information, and separately carry out personal information and consumption information of each consumer Classification of privacy levels; when obtaining consumption information, consumers set the privacy level that the consumer wishes to disclose, and the supermarket or store negotiates with the operator to set the privacy level for the supermarket or store to obtain privacy; The privacy level of the consumer and the privacy level that the consumer wishes to disclose, obtain the personal information and consumption information of the corresponding privacy level of the consumer, analyze the obtained personal information and consumption information, and generate a coupon for the consumer: the invention solves Eliminates the drawbacks of the coupon intelligent generation scheme based on a large database that easily leaks personal privacy, effectively protects consumer privacy, and improves consumer consumption experience.