The invention relates to an inspection well lid device capable of preventing falling and drowning. The inspection well lid device capable of preventing falling and drowning comprises an inspection well lid and an inspection well lid seat, and is characterized in that a floating ring is arranged in the inspection well lid seat and an annular U-shaped groove is formed in an inner circle of the inspection well lid seat; the floating ring is placed in the annular U-shaped groove in the inner circle of the inspection well lid seat; the inspection well lid is placed over the floating ring; the floating ring is provided with two or more downward U-shaped gaps; a spring is nested into a guide rod with a limiting structure at the bottom thereof and a U-shaped gap section of the floating ring, and the guide rod goes through a small hole formed in the bottom of the annular U-shaped groove of the inspection well lid seat to be connected with a connecting ring inlaid into the floating ring and exposed from the U-shaped gap section of the floating ring. When the inspection well lid is removed from the inspection well lid seat, the spring in the guide rod ejects the floating ring out of a road surface; when the inspection well lid is removed from the inspection well lid seat and the mouth of the well is flooded by water, the floating ring floats on water to warn people, thereby achieving the purpose of preventing falling and drowning.