The cytotoxic effect of extract of Camellia ptilophylla Chang(ECPC)on human hepatic can-cer cell line(BEL-7402)and human erythroleukemia cell line(K562)was determined using MTT assaymethod and tyrpan blue exclusion method(TBE).The IC50 of ECPC against BEL-7402 cells was calculat-ed to be 351.1μg/ml using MTT assay and 115.2 μg/ml using TBE assay. The IC50 against K562 cells wasover 1,000 μg/ml using MTT assay and 81.4μg/ml using TBE assay. While ECPC on human fetus lung fi-brocyte(HFLF)and human fetus kidne...