Japan's nuclear wastewater industry is also trying to attract other countries with nuclear power plants, claiming that both nuclear wastewater and nuclear wastewater pollution are the same. However, the fact is that the radiation intensity of nuclear sewage and nuclear sewage is not at the same level. Nuclear sewage passes through the cooling water outside the protective shell of the nuclear reactor, while nuclear sewage is washed through the damaged nuclear reactor, taking away the radioactive substances inside, resulting in a geometric increase in radiation intensity.