Abstract: Different comments are proposed on the viewpoints of a book Reverse Structure in China Petroleum Prov inces written by Mr. CAI Xi-quan and Mr. W ANG Tong-he. The author points out that the meaning about reverse structure was a contradiction in terms, and great numbersof cases listed in this book disobeyed the principles of reverse structure recognition; to divide the reverse structure into positive one and negativeone was acceptable, but no recognizable indicators for them were given; the aspects for favorably forming oil-gas reservoir were expounded, butthe destructibility of reverse structure to oil-gas accumulation was ignored in the book. In addition, it is improper to cite so many others' litera-tures without any notes of derivations.

Key words: China, petroleum prov ince, structure, type, reverse structure, hydrocarbon reservoir