The invention discloses a multifunctional stop valve, and belongs to the field of valves. The multifunctional stop valve comprises a
pipe body, a plug and a connecting rod
system, wherein the connecting rod
system comprises an operation component, a limiting plate and a rod component; the connecting rod
system is arranged to control mounting and dismounting of the
plug in the
pipe body, so that apipeline has multiple functions; when a
handle is moved to the uppermost side and cannot continue to move, a threaded hole is blocked by the plug, the pipeline is firmly blocked and closed, and cannotachieve a water passing function; when the
handle is easily screwed to move downwards and partly and the plug is still located in the threaded hole, a fixing rod has left-right moving space, and at the moment, the function of the stop valve is achieved under the action of a first compression spring; the first compression spring is reversely extruded to generate a gap which water can pass through;and the threaded hole is blocked for sealing by the
plug in the direction opposite to the
force direction of the first compression spring; when the
handle is screwed down forcibly, the plug can slideinto a slide way from the threaded hole, and at the moment, only a common pipeline water passing function is achieved.