Objective: To carry out the investigation on Tetracera asiatica

and lay a foundation for assessing and selecting better T. asiatica. Method: Field visit was combined with literature review to investigate the geographical distribution and habitat

biological characteristics

and associated plants of T. asiatica resources. Result: T. asiatica was mainly distributed in Guangdong

Guangxi

Hainan

located at N 18°01'-23°75'

E 101°37'-118°05'

with altitude between 0-681 m

and at an average elevation of 179 m.There was less and even no distribution beyond this range. Suitable habitat was subtropical evergreen broad-leaved forest and south Asian tropical monsoon evergreen broad-leaved forest

in damp and hot areas of damp valleys or hillside forests or bushes

with humidity of 70% to 91%.The annual average temperature for the growth place was 18.3℃ to 25.4℃

with rainfall of 1 112.1 mm to 2 996.8 mm. Conclusion: The geographical distribution characteristics

biological characteristics and associated plant community types of T. asiatica were preliminarily identified

and the heat factor and humidity were the main limiting indexes for the distribution of T. asiatica. Based on the investigation of germplasm resources and effective composition analysis showed that T. asiatica germplasm resources were abundant

especially in Guangdong and Hongkong

it was well protected and the quality of the medicinal materials was good. At the same time

the prospect for its application was analyzed

providing reference for the protection

development and utilization of T. asiatica resources.