To provide a waterproof face mask wherein a shape changes according to size of a different face to adapt to each user.

This waterproof face mask 1 includes: lens frame parts 21; and a reception part 22 having a plurality of first structures 221 and a plurality of a second structures 222 formed out of alignment at intervals, and tightly contacting with the lens frame parts 21. A first thickness of each first structure 221 is smaller than a second thickness of each second structure 222, so that the reception part 22 of the waterproof face mask 1 is spread according to a different facial form by a difference between the thicknesses, and the waterproof face mask 1 is more comfortable in use.