It is possible not only to inject a medical solution from a plurality of locations but also to obtain a drug solution injection needle capable of restricting the puncture depth of the injection needle while suppressing the difficulty of formation of an infusion.In the liquid medicine injection needle 110 having a plurality of injection needles 115 and a needle support portion 111 for holding a plurality of injection needles 115, the needle support portion 111 includes a needle projecting surface 113 on which a plurality of injection needles 115 protrude, a needle projecting surface 113 and an abutting piece 112 abutting against the skin so that entry of a plurality of injection needles 115 into the skin is prevented when a plurality of injection needles 115 penetrate into the skin at a predetermined depth , And the abutting portion 112 is provided apart from the injection needle 115 so that observable inflation surroundings are formed around each of the plurality of injection needles 115.薬液の注入を複数箇所から行うことができるだけでなく、膨診が形成されにくくなるのを抑制しつつ注射針の穿刺深さを規制することができる薬液注入針を得る。複数の注射針115と複数の注射針115を保持する針支持部111とを有する薬液注入針110において、針支持部111は、複数の注射針115が突出する針突出面113と、針突出面113に形成され、複数の注射針115が皮膚に所定深さの深さ侵入したとき、複数の注射針115の皮膚への侵入が阻止されるように皮膚に当接する当接片112とを有し、当接部112は、複数の注射針115の各々の周囲に観察可能な膨診が形成されるように注射針115から離して設けられている。
