The present disclosure discloses a seal and a regulating valve having the seal. The seal is used for sealing a flow channel between a pipe orifice of a housing and a valve body in the regulating valve. The seal includes an elastic member and an embedded member. The elastic member is ring-shaped, the embedded member is at least partially embedded in the elastic member, and the hardness of the embedded member is greater than that of the elastic member. The seal of the present disclosure has a simple structure, which not only enables miniaturization of the structure of the regulating valve, but also can simplify assembly steps of the regulating valve, thus facilitating assembly automation of the regulating valve.