The formation of the Taiwan Province Strait was as early as 600 million years ago, and orogeny began in the Late Paleozoic. "Taiwan Province Beach" appears in the Taiwan Province Strait, which is the highest place in the Strait, with a depth of only 20 meters, but many areas between the two sides are still connected. In 1970s, chrysanthemum fossils were found in oil exploration in Beigang area of Taiwan Province Province, which were the standard fossils of Mesozoic era. This proves that in the Mesozoic Triassic and Jurassic (about 220 million years ago), although seawater appeared in many places between the two sides of the Taiwan Strait, it was mainly land. The crustal movement in the Taiwan Province Strait has not stopped. Until1920,000 years ago, between Jurassic and Cretaceous in Mesozoic, there was a violent crustal movement on both sides of the strait, at which time Taiwan Province Province began to become land. In geological history, Taiwan Province Province called it "South Australia Movement" (that is, schist in Da 'nan 'ao evolved into marble), while mainland China called it "Yanshan Movement". At this time, the Himalayas and the central mountain range appeared between the two banks. But the two sides are still connected.

The initial formation of the strait. The separation between the two sides of the strait began in Cretaceous and Paleocene, that is, about 54 million years ago, the central part of Taiwan Province Province began to be submerged, and the middle part became a shallow sea and began to become a strait. During the early Eocene crustal movement, the Taiping movement began in Taiwan Province province, and the Maoshan movement began in the mainland, and the land on both sides of the strait became one piece. Until the Quaternary Pleistocene, the granite in South China began to desert, and the timely and mica in the rocks were alluvial to the lower part of the Taiwan Province Strait. Today, the northern and central parts of Taiwan Province Province have been extensively mined and become important raw materials for the glass industry in Hsinchu. Because of the connection between the two places, prehistoric animals came and went between the two sides, and the fossils of saber-toothed elephant and ancient rhinoceros were found in Taichung Pit and Taoyuan. These prehistoric animals living on the mainland stayed in Taiwan Province Province, which is the geological proof that the two sides are connected.

The appearance of transgression and regression periods. Since the Quaternary Ice Age (between 654.38+0800 and 6000), seawater has entered a period of transgression, and the sea level has risen by about 654.38+000 to 654.38+030 meters, forming today's sea level, and the Taiwan Province Strait has begun to form. Since then, cross-strait exchanges have shifted from land to sea. However, before 4500-2000, due to the regression of the sea, the Taiwan Province Strait became shallow, which made it easy to cross the sea, and also provided convenience for residents on both sides of the strait with underdeveloped navigation.

The crustal movement separated Taiwan Province Province from Fujian, and the ebb and flow of tides once led to the passage between Taiwan Province Province and Fujian, but the geology, topography, nature and specialties of Taiwan Province Province and Fujian are very similar. Topographically, the trend and distribution of mountains and rivers and the arrangement of plains and hills are almost all replicas of nature with the same design; Climatically, controlled by the subtropical ocean monsoon, the annual temperature change, precipitation and the arrival of winter and summer monsoon are similar. Vegetation, yellow, reddish brown soil, alluvial soil, calcareous soil and saline soil, all kinds of forest vegetation, rice, tea and fruit crops are so identical and consistent that they exceed human creativity.