The invention discloses a squeeze-drying machine and method. The squeeze-drying machine comprises a cylinder, a screw assembly for conveying materials in the cylinder, a conical shaft sleeve for primary squeezing, a spiral shaft sleeve for secondary squeezing, a heating section cylinder and a squeezing end plate. The first end of the cylinder is provided with a feed port. The second end of the cylinder is connected with the heating section cylinder. The end face of the heating section cylinder is connected with the squeezing end plate. The screw assembly comprises a main shaft driving device, a main shaft, and spiral blades arranged on the main shaft. The main shaft is located in the cylinder and extends in the X axis direction of the cylinder. The first end of the main shaft extends out of the first end of the cylinder and is connected with the main shaft driving device. The main shaft driving device drives the main shaft to rotate. In the X axis direction, the second end of the main shaft is sequentially provided with the conical shaft sleeve and the spiral shaft sleeve. The conical shaft sleeve and the spiral shaft sleeve are matched and connected. The spiral shaft sleeve extends in the heating section cylinder and is matched with the heating section cylinder to conduct secondary squeezing on the materials. The squeezing end plate is located outside the spiral shaft sleeve and provided with a squeezing outlet. The dewatering effect is good.