Adjustable wharf personnel up-and-down channel adapting to water level fluctuation

The utility model belongs to the technical field of trestle access for people to go up and down, and particularly relates to an adjustable wharf access for people to go up and down adaptive to water level fluctuation. The trestle bridge at least comprises a berthing pile and a trestle bridge platform, the device further comprises a lifting guide rail, a buoyancy tank platform, a transition platform, a first step ladder and a second step ladder. The top end of a first step ladder is hinged to a trestle platform, and the bottom end of the first step ladder is slidably connected to a transition platform; the top end of the second step ladder is hinged to the transition platform, the bottom end of the second step ladder is connected to the buoyancy tank platform in a sliding mode, when the water level changes, the height of the first step ladder and the height of the second step ladder can be automatically adjusted along with vertical floating of the buoyancy tank platform, the influence of other factors is small