The utility model provides a pup joint device for feeding upper part of riser pipe under simulation spray method, which is characterized in that the device comprises a center bearing, a plurality of pieces of angle iron, a plurality of support steel bars, an upper rotary baffle and a lower rotary baffle. A pup joint and a drill string penetrate through the middle of the center bearing; the outer side of a vertical steel plate of each piece of angle iron is fixed on the inner side of the riser pipe; the inner side of the vertical steel plate is connected with one end of each support steel bar,and the other end of each support steel bar is connected with the outer lateral wall of the center bearing; the angle iron is distributed on the inner side of the riser pipe in a circumferential manner; and the upper rotary baffle is arranged at the lower part of the support steel bar, and is matched with the lower rotary baffle arranged on the pup joint. With the structure, the pup joint device can also play a role of a centering device at the top part during drilling and realizes the function of centering the upper part of the riser pipe, so that the riser pipe under the spray method can drill in successfully. Besides, the pup joint device can realize automatic assembly and disassembly, thereby avoiding manual operation; and not only the testing requirements are met, but also the operation procedure is simplified, thereby reducing the workload during working and saving the testing expenses to a great extent.