Abstract: Due to the high moisture regain in harvesting cotton,in order to improve the production efficiency, the seed cotton needs to be dried before processing. While drying, the seed cotton is transported to the next procedure. In this paper, the two drying process of the tower type airflow drying and belt type drying, and the transportation way and the main parameters are calculated and compared, hope to reduce the cost of harvesting cotton machine processing, the dust air volume, the noise, the environmental pollution and so on, to find new breakthrough direction.

Key words: harvesting cotton, seed cotton, tower type airflow drying, belt type drying