The invention discloses a moving contact and a moving end component of a quick-closing switch using the same. The moving contact is a barrel body in structure, openings are formed in two ends of the barrel body, the cross section of the barrel body is round, and the axial line of the barrel body extends along the vertical direction; a connecting structure for firmly connecting with an insulating pull rod is arranged in the barrel body, the lower section of the barrel body is a sliding conductive section which is in conductive contact sliding fit with the upper end of a movable support along the axial direction, and the upper section is a contact conductive section which is in insert conductive contact with a static contact finger. The moving contact uses the integrated barrel body structure; the moving contact is capable of reducing the contact resistance of the moving end of the quick-closing switch, and accordingly the heat is reduced, and the flow capacity of the quick-closing switch can be improved easily. The moving contact is simple in structure and light in weight; on the one hand, the operation power for closing is small, the closing speed is fast, and on the other hand, the moving contact diameter can be increased properly, and therefore, the contact area of the moving contact and the static contact finger is increased, and the flow ability is further improved.