Entrepreneurial teams play a crucial role in the success of entrepreneurship. But how does the heterogeneity of entrepreneurial teams affect entrepreneurial team decision-making? The role of team communication in the middle has not yet been explored deeply. This paper takes the entrepreneurial team of college students in China as the research object, and empirically explores the relationship among Entrepreneurial Team Heterogeneity, Team Communication, and Entrepreneurial Decision-making. This paper finds: (1) Entrepreneurial team heterogeneity (internal and external heterogeneity) positively influences entrepreneurial decision-making; (2) Entrepreneurial team communication positively influences entrepreneurial decision-making; (3) Entrepreneurial team communication plays an intermediary role in entrepreneurial team heterogeneity (internal and external heterogeneity) and entrepreneurial decision-making process. At the same time, the conclusions of this study have brought us useful practical inspiration: Although all members of the entrepreneurial team had certain differences in gender, age, education and other aspects, and their views on the same issue also had certain differences, the team members were closely related to each other as a whole. In order to enhance mutual understanding of the team members and to promote consensus among them, team members must often communicate. Frequent and effective team communication develops entrepreneurial decision-making. Therefore, members of the entrepreneurial team should communicate in a variety of ways to guide them adequately and effectively.