Abstract: Eucryptorrhynchus chinensis Olivier(Coleoptera: Curculionidae)is an important root-boring pest of Ailanthus altissima Swingle, threatening to the trees of the shelterbelts in Ningxia. In order to provide clues to the establishment of laboratory population, virgin males and females E. chinensis were fed with different materials(seedling sprout, 2-3 years old branch, diced apple, 10% hydromel and clean water as control)to analyze the effect of feeding material to its fecundity. In this study, during preoviposition period, the amount of eggs and hatching rate were considered as indexes of the fecundity of the weevil. It showed that E. chinensis need nutrients supply to reproduce. The difference of preoviposition period was not significant, while the overall amount of the eggs and their hatching rate of the ones fed with seedling sprout and 2-3 years old branch(amount of eggs is 93-152, hatching rate is 74.60% and amount of eggs is 101-156, hatching rate is 68.42%, respectively)were significantly higher than that of diced apple and 10% hydromel(amount of eggs is 13-49, hatching rate is 41.67%, and amount of eggs is 2-36, hatching rate is 15.83%, respectively). In control treatment, only several eggs were laid by two females and they could not hatch out successfully. It suggested that E. chinensis could reach the largest fecundity when fed with the material of A. altissima. Specific suggestions were put forward as the follows: ① use the seedling sprouts and 2-3 years old branches as feeding materials for the rearing of E. chinensis in laboratory; ② set the seedling sprouts as baits and spray pesticides to control E. chinensis during its occurrence in field.