Abstract: This paper used "Jintaiyang" and "Luotuohuang" growing in greenhouse as materials, and studied the growth and development of apricot fruit, shoot and the course of flower bud differentiation. The results indicated that the growth of fruit for the both cultivars was of "double S" growth curve, but the growth quantity in high temperature plot was larger than that in normal temperature plot. The number of shoot rapid growth period of "Jintaiyang" did not changed in greenhouse, existed three rapid growth periods as same as in the open field, but the time of emergence varied, the growth speed and maintaining time was faster and longer than that in the open field. The growth of apricot alternated between the fruit and shoot in greenhouse. The course of flower bud initiated on May 20 and ended in last ten day of October.