The utility model provides a connecting piece for connecting at least two and waiting to connect the body, the connecting piece includes: the tight piece of first clamp, the tight piece of first clamphave first end, the second end of relative setting, the second that sets up side by side with the tight piece of first clamp presss from both sides tight piece, the second press from both sides tightpiece have with first end position in the third end of homonymy, with the fourth end of second end position in the homonymy, elastic connecting piece, elastic connecting piece's both ends are connected with second end, third end respectively, and the tight piece of first clamp is located some elastic connecting piece and presss from both sides between the tight piece with the second, and the lastone side that is close to the third end of elastic connecting piece is equipped with and is used for the location and waits to connect the constant head tank of the body, press from both sides tightat least two of tight film jacket through tight piece of first clamp and second and wait to connect the body to accomplish to connect, thereby has increased at least two area of contact that wait to connect between personally experiencing sth. Part of the body and contact force has reduced contact resistance, just installs simply convenient to detach, the constant head tank prevents after the installation to wait to connect for at least two to take place the displacement between the body, and simple structure is reliable.