Mainly on diversity studies of orchids distributed in East Asia and East Africa, especially on :

1. Phylogeography of orchid disjunctive distributed in Asia and Africa
2. Conservation genetics of medicinal orchid—take Beltilla striata for an example
3. Chemical component analysis of fragrant orchid
4. Phylogeography of orchid distributed widely in East Asia
5. Appreciation and evaluation of orchid

1. nservation studies of African important orchid resources
2. Collection and evaluation of Beltilla striata resources
3. Phylogeography of Coelogyne fimbriata distributed in China