The feed transforming efficiency of Monopterus albus fed with the larva of Tenebrio molitor L.was preliminarily studied.The results showed:with the same stock density 1.5 kg·m^-2,the dry biomass mean transforming efficiency was 11.3% and the energy mean transforming efficiency was 7.8% under condition B(Different strains with some individuals in bad condition were cultured under temperature 24±4℃,changing water every 7 d).But under conditions A(healthy individuals were cultured under temperature 17±3℃ in quiet circumstances,changing water every 2 d or 3 d),the two indexes were 20.1% and 13.9% respectively, and the transforming efficiencies of N and P were 22.0% and 28.9% respectively.Monopterus albus had lower growth rate if it was fed with the larva for a long time.It was appropriate that Monopterus albus was fed with a vary type of lively baits or with the fodders made up of compound feeds and lively baits in practice.