This study aims at modeling the rotary drying of wood chips in co-current mode and estimating the dryingtime of larch (Larix kaemferi) wood chip. Drying data were obtained in a lab. scale fixed bed dryer operatingwith an air velocity of 1 m/sec. and at hot air inlet temperatures of 100℃, 200℃, and 300℃. The lab. scalefixed-bed drying rates for small, medium and large size larch wood chips that had been dried from 40%wet-based moisture content (MC) to 10% MC at 200℃ drying temperature were 17.3 %/min., 10.2 %/min. and 5.5 %/min., respectively. It was predicted that larch large size wood chips could be dried from 40%MC to 10% MC in about 23.0, 34.6, and 44.7 minutes at 300℃, 200℃ and 150℃, respectively. Expecteddrying times for medium size chips were about 8.6, 11.2 and 13.2 minutes and those for small size chips were4.3, 5.5 and 6.4 minutes, respectively.