Because Japanese history has its own historical records so far, the biggest earthquake was the 8.4-magnitude Baoyong earthquake in 1707, which was felt within 600 kilometers. At least 60,000 people died and more than 60,000 houses collapsed. The tsunami brought by the earthquake hit the Pacific coast of Japan, and the waves swallowed up about 20 thousand families. The earthquake compressed the crust with magma underground and accumulated energy, which led to the eruption of Futushan volcano a month later.

The largest number of earthquake deaths in Japanese history can be said to be the 7.9-magnitude Kanto earthquake that occurred in1September, 923. The earthquake happened in Tokyo, the capital of Japan. Due to the dense population, wooden houses and fires caused by the earthquake, the number of people who died and were unaccounted for reached142,807, 3.4 million people were affected by the earthquake, and 447,000 houses were burned.