The utility model discloses a cave device is pressed to tobacco sabot seeder, including slide bar, support, scrape the flitch, press the cave gyro wheel, press the cave roller shaft, the gyro wheel brush, gyro wheel brush length corresponds with pressing cave roller shaft length, install respectively in two mounting grooves at gyro wheel brush base plate both ends, is equipped with the pressure spring in the mounting groove, and on the pressure spring lower extreme acted on gyro wheel brush base plate, the pressure spring upper end acted on on the mounting groove, the mounting groove passes through bolted connection in the one end of support arm, and the other end bolted connection of support arm is on the support. Be stained with the matrix of attaching on the gyro wheel of pressure cave and can in time obtain the clearance, guarantee the normal continued work of device and the shape standard rule in cave hole, have the reliable operation simultaneously, the scrap build is convenient and compatible good, durable's advantage.