Integrin αⅡbβ3 plays a pivotal role in platelet activation by interacting with ligands and mediating the signal transduction. After various agonists bind to their acceptors on platelets, the inside-out signaling develops, then the outside-in signaling happens. Talin, kindlin and Src, which are important signaling proteins involved in these progresses, have been intensively studied. Talin and kindlin are essential in inside-out signaling, while Src is important in outside-in signaling. This review focuses on the research progress of talin, kindlin and Src.