The present invention relates to a liquid infusion apparatus, comprising: a finger module arranged on a main body such that the finger module can elastically move backward from a liquid delivery tube； a tube clamp, in which two clamp bodies spaced apart from each other approach each other by means of the restoring force of an elastic member upon the opening of a door during infusion, so as to compress and block the liquid delivery tube； and a tube blockage detection device which detects whether the liquid delivery tube is blocked or expanded when the outlet side of the liquid delivery tube, which delivers a medicinal liquid pumped by a liquid pump during infusion, is accidentally bent.
