The present invention relates to a 3-way stopcock for medical treatment, capable of simultaneously and stably supplying not only one type of chemical liquid but also two or more types of chemical liquids (infusions, injections, antibiotics, etc.) required for a patient. A 3-way stopcock for medical treatment comprises: a chemical liquid supply means having a cup-shaped body with three outer surfaces with respective chemical liquid distribution tubes for distributing chemical liquids required for a patient, and having an open top a chemical liquid control means having a joint member to be tightly and rotatably coupled to the body, the joint member having 3-way communication paths for selectively opening and closing the chemical liquid distribution tubes, the chemical liquid control means having an upper portion with an indication part indicating whether or not each communication path and each chemical liquid distribution tube communicate with one another and coupling members detachably coupled to the chemical liquid distribution tubes, and having coupling portions for preventing the chemical liquids from leakage and preventing the coupling members from arbitrarily escaping from the chemical liquid distribution tubes.La présente invention concerne un robinet à trois voies pour traitement médical, capable dune fourniture simultanée et stable non seulement dun type de liquide chimique mais également dau moins deux types de liquides chimiques (perfusions, injections, antibiotiques et analogues) requises pour un patient. Le robinet à trois voies pour traitement médical comporte : un moyen de fourniture de liquide chimique présentant un corps en forme de coupelle avec trois surfaces extérieures comprenant des tubes de distribution de liquides chimiques pour la distribution de liquides chimiques requises pour un patient, et présentant une partie supérieure ouverte un moyen de contrôle de liquides chimiques comprenant une pièce de raccord pour un accouplement rotatif étanch
