The principle of prudence is not disrespect for science, but a pragmatic attitude to the application of science. The achievement of scientific research and its social recognition often represent huge economic benefits or even the lifetime achievements of scientists. It is difficult to guarantee that scientists will not relax scientific principles. Violation of regulations; the socialization of scientific research results are often linked to the interests of enterprises, and companies will inevitably conceal hazards when they seek to profit; due to the unknown factors of scientific research and the difficulty and time span of dangerous discovery, even scientists and enterprises uphold scientific conscience, It is also difficult to guarantee that the potential harm of scientific research results can be found. The text is intended to emphasize:. ['Application of scientific results should be cautious.', 'The potential dangers of the application of scientific research results cannot be predicted.', 'The economic benefits attached to science corrupt the spirit of science.', 'Moral principles are the primary principles for scientific research.']