The development of big data analysis and cloud computing technology has led to intelligent recommendations that have brought convenience to readers to some extent. However, the limitations of computer information processing will cause readers to obtain information guided by their short-term interests habitually, so that they are trapped in the "cocoon room" and becomes an information isolated island. In order to solve the dilemma of information cocoon, the author uses reverse thinking to put forward zero data, and based on zero data and information cocoon literature research, the nature of information cocoon through zero data is analyzed and strategy is put forward to break the information cocoon by zero data acquisition, definition, cross sharing and innovation recommendation.