A device for supplying medical liquid, having an improved structure comprises: a tube (190) formed in a hollow shape such that medical liquid flows through a path a roller assembly (110) which has a roller (114) for pressing one side of the tube and enables the medical liquid to flow in the rotation direction a tube support part (130) for supporting the other side of the tube which is pressed by the roller (114) an inner tube line (3) which is formed along the outer peripheral surface of a control unit (120) and a space between the roller assembly (110) and the tube support part (130), and which is divided into a left side, a right side and a top side a tube cover (180) for covering the top portion of the inner tube line (3) a free flow-preventing member (140) for preventing the medical liquid from flowing irrespective of the pumping operations left and right side pressure sensors (4) which are fixed to a lower body part (102) and sense the pressing force of the tube so as to transmit the sensed pressing force to the control unit (120) and the control unit (120) for receiving signals with respect to the pressure of the left and right side pressure sensors (4) so as to output the signals to a display unit (6), and having the inner tube line (3) which is formed along the outer periphery thereof so as to secure the tube.Linvention concerne un dispositif pour acheminer un liquide médical, ayant une structure perfectionnée, qui comprend : un tube (190) façonné dans une forme creuse de telle sorte quun liquide médical sécoule à travers un passage un ensemble rouleau (110) qui a un rouleau (114) pour presser lun des côtés du tube et permet au liquide médical de sécouler dans la direction de rotation une partie support de tube (130) pour supporter lautre côté du tube qui est pressé par le rouleau (114) une ligne de tube interne (3), qui est formée le long de la surface périphérique extérieure dune unité de commande (120) et un espace entre lensemble rouleau (110) et la p
