A multifunctional check valve device contains: a base, an elastic member, and a locking member. The base includes a peripheral rib, an accommodating chamber, a column, a stopping face, a connecting orifice, a plurality of through orifices, a first outlet, and a positioning groove. The elastic member includes a fixing loop for retaining with the connecting orifice and a closing disc for corresponding to a second outlet of a pull-out faucet. An outer diameter of the closing disc is greater than an inner diameter of the closing disc, so the closing disc closes an inner face of an exit. The closing disc has a retaining tab for retaining with the positioning groove. The hollow locking member includes inner threads for screwing with outer threads of the pull-out faucet and accommodates the base. The hollow locking member also includes a third outlet for aligning with the first outlet of the base.