Running has certain effects on hepatitis B virus, there are good effects and bad effects. 1. Good effects: if hepatitis B is in a stable period, such as hepatitis B viral load is lower than normal, liver function is normal, patients feel good, without any discomfort symptoms, especially not feeling tired, at this time you can moderate physical exercise, which can enhance physical fitness and help to promote health. 2. Bad effects: If hepatitis B is in the active stage, such as hepatitis B virus load is relatively high, at the same time, liver function is abnormal, the patient himself has symptoms of fatigue, it is not suitable for physical exercise, you need to take a rest to avoid increasing the burden on the liver, otherwise it is easy to cause low immunity, but may aggravate the condition. Therefore, it is recommended that patients should be examined by a specialist to determine whether they are suitable for physical exercise.