Biological evaluation of 12 excellent jute germplasm introduced have been carried out for continuous 3 years.The results showed that most of the germplasm were late mature,green stem,with axillary bud,lanceolate or ovate leaves and morphological uniformity.The leaf wax content of O-4 was markedly higher than any domestic variety,petioles of O-5 clinged to the stem.All the varieties were photoperiod sensitive varieties in the short day treatment,but when planted in the field,no early-flowering phenomenone was found.These varieties growed normally in main planting area,the late mature varieties could be harvested seeds only planted in south China.