An object of the present invention is to provide a contrast medium warming and injecting system in which the injection pressure of a contrast medium to be injected is reduced and the contrast medium is easily injected. The contrast medium keeping and injecting system (100) of the present invention includes an injection device (I) and a pump control device (10f), and includes a pump head (10a) and a small-diameter syringe (30). (30) It is further provided with the outer periphery heat insulation heater part (10c) attached to the outer periphery, and an outer periphery heat insulation heater part (10c) is connected to the heat source output terminal provided in the pump head part (10a), .注入される造影剤の注入圧を低減させ、造影剤の注入が容易な造影剤保温注入システムを提供することを目的とする。本発明の造影剤保温注入システム(100)は、注入装置(I)と、ポンプ制御装置(10f)とを具備し、ポンプヘッド部(10a)と、小径シリンジ(30)とを備え、小径シリンジ(30)の外周に取り付けられる外周保温ヒーター部(10c)をさらに備え、外周保温ヒーター部(10c)は、ポンプヘッド部(10a)に設けられた熱源出力端子に接続されることを特徴とする。