Precautions include: do not eat breakfast before physical examination, avoid strenuous exercise the day before physical examination, do not smoke and drink, and eat less meat, so as not to affect the results of liver function test.

The health certificate is valid for one year, and it will be invalid after one year. After completing all physical examination items, ask the staff about the time and place of health laws and regulations training, and issue a certificate of health laws and regulations knowledge training to those who pass the training. This certificate is valid for two years, and there is also a training fee, usually1from 0 yuan to 30 yuan, which varies from place to place.