OBJECT There is provided a coinfusion apparatus capable of automatically performing part or all of a coinfusion processing appropriately. MEANS FOR SOLUTION A coinfusion apparatus 1 includes: a first robot arm 21 which retains a medical agent container； a second robot arm 22 which performs an operation of inserting a syringe needle of a syringe into a mouth of the medical agent container retained by the first robot arm 21, and an operation of inserting the syringe needle of the syringe into a coinfusion mouth of a transfusion bag； a coinfusion processing room 104 which shelters the robot arms, etc.； and a transfusion bag elevation inclination section 113 which retains the transfusion bag outside of the coinfusion processing room 104 and positions the coinfusion mouth of the transfusion bag in a coinfusion communication mouth 37 formed in the coinfusion processing room 104. A trash storage room door 13 is provided in a front surface of the coinfusion apparatus 1.
