本文对渤海地区第四纪气候及海水活动进行了研究。认为:第四纪起始时间为距今306万年;该时期可划分为4个冰期和间冰期;伴随气候冷暖变化,发生频繁海面升降和海水进退活动,大幅度的海平面上升和海侵活动共有8次,均发生在温暖的间冰期或亚间冰期;渤海地区第四纪气候变化和海平面升降是全球变化的反应。 This paper studies the Quaternary climate and seawater activities in the Bohai Sea. It is believed that the Quaternary began at 3.06 million years ago and can be divided into four glacials and interglacials in this period. With the change of climate, there are frequent ups and downs of sea surface and seawater, and the sea level rise and transgression A total of eight activities took place in the warm interglacial or sub-interglacial; Quaternary climate change in the Bohai Sea and sea level rise and fall are the response to global change.