A medical positive-pressure switch connector comprising a connector base (1), an infusion connector (4), a solution-outlet connector (5), and a valve (6). Either one or two or multiple infusion connectors (4) respectively are connected to the connector base (1). The valve (6) comprises a valve rod (6.1) and a protruding and exposed operating handle (6.2). The valve rod (6.1) and the operating handle (6.2) are either integrally constructed or separately constructed but integrally connected. The valve rod (6.1) is sealedly connected to a corresponding part of the connector base (1) in a way that allows movements relative to the connector base (1) and is bridged between an infusion channel of the inner core of the infusion connector (4) and a solution-transferring cavity of the inner core of the connector base (1). The positive-pressure switch connector is applicable in medical procedures as a connecting switch for liquid diversion, convergence, drawing, injection, and drainage scenarios, generates no negative pressure when a penetrating needle is withdrawn at the completion of an infusion, is capable of closing off a medicinal solution injection channel for intermittent infusion, also allows for diverted or converged infusion, is convenient to operate, and is applicable in various medical scenarios. While moving, the valve rod (6.1) drives a liquid in a motion chamber into a solution-outlet channel (1.1), the liquid driven out is discharged into the body via a catheter, that is, the valve rod (6.1) generates a forward liquid flow while sliding, thus providing a positive-pressure effect.Ce contact de commutation de pression positive utilisé à des fins médicales comprend une base de contact (1), des contacts pour perfusion (4), des contacts pour prélèvement (5) et une soupape (6), un, deux, voire une pluralité de contact(s) pour perfusion (4) sont respectivement connectés à la base de contact (1), la soupape (6) comprenant, quant à elle, une tige de soupape (6.1) et une
