In this paper Limnodeilu （A）, egg yolk （B） and homemade diet （C） were used to fed rainbow trout fry for 15 days to study the effects of the three initial feeds on growth, and to survival rate of rainbow trout fry. Results indicated that no significant differences were found in the length growth and weight gain between the three groups. The survival rates of group A, B and C were 62.0%, 51.5% and 51.0% respectively.