Provided is a multi-cap for connecting a catheter and the multi-cap includes: a body having an internal hole formed in a longitudinal direction and having an end connected to a catheter； a cover portion disposed on an outer side of the body in the longitudinal direction of the body and spaced from the body such that the catheter is partially inserted between the outer side of the body and the cover portion. Further, a spout is formed at a second end of the body to transmit an injection substance from the outside to the hole and a capping part is connected to a side of the body to selectively close the inlet of the spout.
