This research analyzes the main reasons for major league baseball strikes by collecting relevant literature and applying negotiation theory. The study found that in addition to tensions and hostility between employers and employees over a history of unharmonious negotiations, there was also a delay in reaching a consensus on the "salary cap" issue in the main reasons leading to the strike. During the entire negotiation process, the player union and the team owner most of the time adopt a distributed negotiation model and apply competitive strategies and tactics to try to make the other party concede, resulting in a serious negotiation deadlock. Therefore, this study suggests that in the future professional sports leagues should expand the resources available to both employers and employees in the common interest when facing controversial issues such as salary, so as to avoid the occurrence of labor disputes.