The invention relates to the field of medical instruments, and discloses a multifunctional clinical drainage control device. The multifunctional clinical drainage control device comprises a weighting-type base assembly, a suspension assembly, a drainage adjustment assembly, a controller and a power assembly; in the drainage process, the suspension assembly can provide support for a drainage bag, and the weighting-type base assembly can feed back a weight signal reflecting the change of accumulation liquid in the drainage bag to the controller; the drainage adjustment assembly comprises a firsttube rolling mechanism and a second tube rolling mechanism, the working states of the first tube rolling mechanism and the second tube rolling mechanism are regulated and controlled by the controller, the negative-pressure drainage process can be achieved, regulated and controlled with the assistance of the first tube rolling mechanism and the second tube rolling mechanism, and the normal-pressure drainage process can be regulated and controlled with the assistance of the first tube rolling mechanism. The multifunctional clinical drainage control device adopts an intelligent design, can achieve automatic control over fixed-time drainage, fixed-amount drainage and fixed-speed drainage through the cooperative use with an existing conventional drainage assembly, improves the safety and stability of drainage operation, has a normal-pressure drainage mode and a negative-pressure drainage mode, and can meet most clinical drainage needs.