Objective : To isolate the chemical constituents from the whole plant of Pyrola decorata and identify their structures. Method: The constituents were isolated by chromatography methods; the structures of these compounds were identified by physico-chemical constants and spectral analysis. Result: Seven compounds were isolated and elucidated as: quercetin (1)

hyperin (2)

isoquercitrin (3)

quercetin-3-O-α-L-arabinofuranoside (4)

quercitrin (5)

gallic acid (6)

2″-O-galloyl-heprin (7). Conclusion : Compounds 1

3

5

6 were isolated from this plant for the first time.