During the four years of university life, most of the students live in group dormitories, and sometimes dishes, cups, towels and other items are mixed with each other, so if there are hepatitis B patients or hepatitis B virus carriers in the same dormitory, such poor hygiene habits (may) lead to cross-infection. There was a college student who was worried that he was infected with the hepatitis E virus and came to the laboratory because of the illness of a fellow student in the same dormitory, and the test result was positive for hepatitis E antibodies, suggesting that there was indeed a hidden infection, and the above-mentioned poor hygiene habits were common in his dormitory. Hepatitis E is a digestive tract transmitted disease. The consequences would be even more serious if it were transmitted by the hepatitis B virus. After contracting hepatitis B virus infection, some people may become chronic, resulting in increased medical expenses, quality of life and future employment, and the possibility of transmission of hepatitis B virus to the next generation. Therefore, prevention of hepatitis B will benefit you for life. I would like to inform every student of the methods and suggestions for preventing hepatitis B through this open letter. Suggestions: ① Students in group dormitories should change their poor hygiene habits and use separate items for individual use such as tableware and washing utensils and water cups. ② Students who do not have hepatitis B antibodies (or those with low antibody titer levels) should be vaccinated against hepatitis B in a timely manner in order to develop immunity against hepatitis B virus infection. ③ To find out whether you have antibodies or the level of antibodies, a quantitative test is recommended. The test results at the entrance physical examination are mostly qualitative testing methods, i.e., they only show positive or negative results. Quantitative antibody testing is recommended, and students with relatively low levels of hepatitis B surface antibodies should be closely observed and, if necessary, reinforced with injections.