A soap dispensing device having a soap replenishing notification function comprises a liquid soap container, a soap dispensing body, a soap dispenser connected with the liquid soap container and a control box. The liquid soap container is internally provided with a liquid level detection unit capable of emitting a liquid soap replenishing signal. The soap dispensing body is provided on a countertop and connected with the liquid soap container, and has a liquid soap replenishing light display area, an induction area capable of emitting an induction signal and a soap dispensing head. The control box is used for receiving the liquid soap replenishing signal and the induction signal, wherein the liquid soap replenishing light display area is formed on the soap dispensing body according to the liquid soap replenishing signal, and a liquid soap is supplied by the soap dispensing head according to the induction signal.