Abstract:Through the detailed biostratigraphic study of the Penglai Group in Qixia Region,plenty of micropaleobotanic fossils were collected, but no invertebrate fossils. Therefore, the so called “brachiopoda”and“bivalve”fossils previously sampled in the Penglai Group in this region are highly doubtful. In this peper,the authors reaffirmed that the age of the Penglai Group in Qixia region belongs to the Sinian Period.