This paper focused on the larva growth rate, mortality, pupation rate, nutritional component of Tenebrio molitor L. at different fodders and breeding densities. They were evaluated in laboratory by the test of two factors (fodder and density) and multi-levels. The results showed that：(1)The order of average body weight increase in mg/per larva of Tenebrio molitor respectively was: Group C(wheat bran＋Cabbage)> Group B(wheat bran)> Group A(Chinese cabbage)> Group D(Starvation), 1～4 larva/cm^２>6～8 larva/cm^２. (2)The order of total larval mortality respectively was: Group A, Group C> Group D> Group B, 8 larva/cm^２> 2～6 larva/cm^２ > 1 larva/cm^２;The order of natural mortality respectively was: Group B, Group C>Group A> Group D, 8 larva/cm^２>1～6 larva/cm^２; The order of cannibalism mortality respectively was: Group A, Group C, Group D>Group B, 8 larva/cm^２>4～6 larva/cm^２>1～2 larva/cm^２; The order of the proportion of cannibalism mortality to total mortality respectively was: Group D＞Group A, Group C＞Group B, 4～8 larva/cm^２>2 larva/cm^２>1 larva/cm^２. (3)The order of larva pupation rate of Tenebrio molitor respectively was: Group C>Group A, Group B, Group D, 1～2 larva/cm^２>4 larva/cm^２>6～8 larva/cm^２. (4) The order of larva dry matter content of Tenebrio molitor respectively was: Group B>Group C>Group D>Group A, 8 larva/cm^２>6 larva/cm^２>1,4 larva/cm^２>2 larva/cm^２; Larva nitrogen (crude protein) content and phosphorus content of Tenebrio molitor were not affected by breeding densities while affected by fodders from high to low: Group A, Group D>Group B, Group C. (5)It was appropriate to feed larva under the reasonable proportion of concentrated feed to succulence, and to culture larva at 2 larva/cm^２ if pupation and propagation were considered while at 4 larva/cm２ if pupation and propagation were not considered in practice.