Reducing pile limiting protection device for water platform

The utility model discloses an overwater platform reducing pile limit protection device which comprises a protection device body hung upside down on a steel casing, the protection device body is formed by splicing more than two installation units up and down, each installation unit comprises an annular steel plate, four supporting columns and an installation footstand, and the four supporting columns are evenly distributed above the annular steel plate along the circumference. The supporting columns are vertically installed on the annular steel plate, the free ends of the supporting columns are fixedly connected with the annular steel plate at the bottom of the other installation unit, and the installation footstands are fixedly arranged at the free ends of the supporting columns on one installation unit. According to the limiting protection device for the reducing pile of the water platform, during construction, the protection device body can be machined on the ground in advance, and after the steel pile cas