Cast-in-place pile pouring pipe supporting device

The invention discloses a cast-in-place pile pouring pipe supporting device. The cast-in-place pile pouring pipe supporting device comprises a pouring pipe and a pile opening supporting platform, the pouring pipe comprises a pouring hopper, the bottom of the pouring hopper is fixedly connected with a connecting pipe, a discharging pipe is arranged below the connecting pipe, the upper end of the discharging pipe protrudes to form an inserting pipe, and the lower end of the connecting pipe is inserted into the inserting pipe; and a pipe penetrating hole is formed in the pile opening supporting platform, two sliding supporting plates are arranged on the upper surface of the pile opening supporting platform and located on the two sides of the pipe penetrating hole correspondingly, and the sliding supporting plates are slidably connected to the pile opening supporting platform, can slide upwards relatively and abut against the pile opening supporting platform. The side faces of the opposite sides of the two slidin