Biology of the powder post beetles, Lyctus linearis Goeze (Lyctidea: Coleoptera) was investigated under laboratory conditions. The female of beetles lay its eggs in the pores on the wood surface. The insect undergoes had four annual generations. The incubation period of 1^st, 2^nd, 3^rd and 4^th generations was 7.2, 6.8, 7.9 and 10.7 days, respectively.  Rate of hatchability ranged between 66 % and 100 %. The duration of the larval stage ranged between 28 and 103 days during four annual generations. The pre- pupa, pupa, adult hardness and adult longevity durations were averaged 1-5, 6-15, 1-5 and 11-29 days, respectively