The invention discloses a photovoltaic stepwise pumping system suitable for mountain areas. A pumping pool in a natural water source pumping component is dug in a place of natural water source; a group of first water pumps are arranged in the pumping pool below an impurity filter screen; the electric energy converted by a first photovoltaic combination can supply power to the first water pumps; the altitude of a container in a user water-taking component is higher than that of the natural water source pumping component; the container is communicated with a water-taking pipe; at least two pumping relay components are arranged between the natural water source pumping component and the user water-taking component; second water pumps are arranged in intermediate pools in the pumping relay components and are driven by the electric energy converted by a second photovoltaic combination; the altitudes of intermediate water tanks are higher than those of the intermediate pools; the intermediate water tanks are supported on the ground through intermediate brackets. According to the invention, the photovoltaic stepwise pumping system adopts a stepwise pumping mode, utilizes solar energy to supply energy, and is clean, environmental friendly, low in price, easy to implement and high in reliability.