An environment-friendly water-saving plant pot includes a first pot body and a second pot body. The first pot body has a receiving space having an upward opening, and a water outlet hole formed in the receiving space. A protruding unit that has several reinforced ribs extends upwards from the periphery of the water outlet hole. The second pot body is disposed in the receiving space of the first pot body, and has a second receiving space having an upward opening. A plurality of through holes are circularly formed inside the second receiving space, and the second pot body extends from the bottom to form a cover that has a cover opening, and the opening of the cover opening and the protruding unit of the first pot body are spaced to form a gap.
