PROBLEM To provide a co-infusion apparatus and a co-infusion method which can photograph an image suitable for inspecting whether or not a co-infusion process in the co-infusion apparatus is properly carried out. MEANS FOR SOLVING Provided is a co-infusion apparatus for suctioning a medicine from a medicine container 10 with an injector 11 based on preparation data and injecting the medicine from the injector 11 into the medicine container 10. The co-infusion apparatus controls a first driving means being capable of transferring one or both of the medicine container 10 and the injector 11 to an arbitrary position and a second driving means being capable of handling the injector 11 to suction the medicine from the medicine container 10 with the injector 11 and then controls the first driving means to transfer, into a photographing range, the medicine container 10 after the medicine has been suctioned and the injector 11 in which the medicine has been suctioned to photograph, at one time, the medicine container 10 and the injector 11 transferred into the photographing range.
