Needle-less connector

A needle-less connector comprising:

• a housing having a drug solution flow path;
• and
• an elastic valve body provided at a tip end opening of the drug solution flow path while having a slit formed penetrating therethrough such that insertion of a male luer into the slit opens the elastic valve body and connects the male luer to the drug solution flow path, wherein
• an end surface of the housing on a side of the tip end opening of the drug solution flow path constitutes a protruding support surface whose center section protrudes and slopes in a direction of a foot, and the elastic valve body is superposed onto the protruding support surface in a state of close contact therewith,
• the insertion of the male luer into the slit of the elastic valve body causes expanding deformation of the elastic valve body along the protruding support surface, and
• a flexion section is formed on a sloped surface of the protruding support surface, and the sloped surface has different tilt angles on a foot section side and on a crest section side of the flexion section.