The utility model relates to the technical field of geological exploration, in particular to a drilling follow-up casing pipe device which is used during the drilling of soft stratums and stratums, which leak pulp seriously. A casing pipe is arranged between a drill bit and a drill pipe; a drill pipe outer bevel gear is fixedly arranged at the connection part of the drill pipe and the drill bot; a casing pipe inner bevel gear is fixedly arranged at the lower end of the inner wall of the casing pipe; the drill pipe outer bevel gear and the casing pipe inner bevel gear are meshed during the drilling of the drill bit. The drilling follow-up casing pipe device has the benefit as follows: the drill bit and the drill pipe are connected in a meshing manner by adopting a group of bevel gears, and when the drill pipe drives the drill bit to drill, the casing pipe is driven to rotate, so that the aim of feeding the casing pipe and protecting the wall is achieved. The drilling follow-up casing pipe device is simple in structure and convenient to use, and can be used for effectively supporting the pore walls when encountering soft stratums or stratums severe in circulating fluid leakage and easy to collapse in the drilling process.