Disclosed are a trocar housing and a trocar. The trocar housing comprises a first housing component, a second housing component, and a locking mechanism for selectively connecting the first housing component to the second housing component. The locking mechanism comprises locking members and matching members. The locking member is provided in the second housing component. The matching member is provided in the first housing component. Under the elastic force of an elastic member, the locking members are engaged with the matching members. Under the function of an external force, the locking member overcomes the elastic force to generate the motion so that the locking member is separated from the matching member. Engaging and separating achieve the selective connection between the first housing component and the second housing component. The motion comprises one or a combination of more than two of translation, elastic deformation, and pivot. The trocar comprises the trocar housing. According to the trocar housing in the present invention, the selective connection between the two housing components is achieved by pressing the locking mechanism, and the jamming defect of the rotary locking mechanism is overcome.L'invention concerne un boîtier de trocart et un trocart. Le boîtier de trocart comprend un premier composant de logement, un second composant de logement, et un mécanisme de verrouillage pour connecter sélectivement le premier composant de logement au second composant de logement. Le mécanisme de verrouillage comprend des éléments de verrouillage et des éléments d'appariement. L'élément de verrouillage est disposé dans le second composant de boîtier. L'élément d'appariement est disposé dans le premier composant de boîtier. Sous la force élastique d'un élément élastique, les éléments de verrouillage sont en prise avec les éléments d'appariement. Sous la fonction d'une force externe, l'élément de verrouillage surmonte la force élastique pour générer le mouvement
