PROBLEM TO BE SOLVED: To provide a liquid injection apparatus which is less likely to cause a patient to feel discomfort or a pain when injection needles are indwelled.SOLUTION: The liquid injection apparatus comprises: a liquid regulation part comprising injection needles 120-1 and 120-2 which have liquid channels inside, an elastic support member 130 which supports positions between the longitudinally distal ends and rear ends of the injection needles, and a regulation member 140 which regulates the movement of the rear ends of the injection needles within a predetermined range； and a pump which supplies a liquid to the liquid injection part.SELECTED DRAWING: Figure 10【課題】注入針を留置した際に、患者に違和感や痛みを生じさせにくい液体注入装置を提供する。【解決手段】内部に液体の流路を有する注入針１２０－１，１２０－２と、注入針の長手方向の先端部と後端部との間の位置を支持し、弾性を有する支持部材１３０と、注入針の後端部の移動量を所定の範囲内に規制する規制部材１４０と、を備える液体注入部と、液体注入部に液体を供給するポンプと、を有する液体注入装置である。【選択図】図１０
