The invention belongs to the technical field of engineering machinery, and particularly relates to an intelligent pile hole inner muck suction machine and a pile hole muck automatic suction method. The intelligent pile hole inner muck suction machine comprises a chassis, a fan, a suction separation device, a suction pipe, a suction unit, a controller, a master control platform and an imaging mechanism; the suction unit is arranged at the tail end of the suction pipe, the suction separation device is arranged above the chassis, the imaging mechanism is arranged at the tail end of the suction pipe, the suction unit and the imaging mechanism are electrically connected with the controller, and the controller and the imaging mechanism are electrically connected with the master control platformor are in wireless communication with the master control platform; According to the muck suction machine, the problem that mucks in the bottom of pile holes are difficult to clean is solved, the large-block mucks are subjected to rotary cutting, scattering and separation by using the suction unit, and the scattered mucks are sucked into the suction separation device to complete gas and dust separation as the airflow enters the suction separation device through the negative pressure suction principle.