Abstract: This paper attempts to discuss the problem of wheat tillering function in wheat from the viewpoint of materialist dialectics, and indicats that the tillering function should include the relation between the. number of tillers and leaf-age of wheat under various conditions, so that it should include paramneter reflecting objective conditions. Such function may be derived from the basic law of tillering process,that is, the tillering rate is in direct proportion to number of tillers. This paper also indicate that the tillering function expressed by Fibonaecis series is unreasonable, and discuss the applicable significance of the relation between number of tillers and cumulative temperature.