Prolonged exposure to camphor balls is harmful to the body. The human body usually does not have obvious symptoms when exposed to camphor balls for a short period of time. However, if the human body is exposed to camphor balls for a long time, a series of symptoms can appear, such as headache, weakness, dizziness, etc. This is due to the benzene and other toxic substances contained in camphor balls can directly damage the liver, kidneys and the respiratory tract and other parts of the body, but also can directly destroy the red blood cells and the emergence of acute hemolytic phenomenon, and can even cause symptoms such as damage to the central nervous system. For infants, the skin barrier is relatively weak, if contact with the benzene contained in camphor balls, can enter the blood to appear acute hemolysis, followed by anemia. For pregnant women, long-term exposure to camphor balls may cause fetal developmental defects. If there are uncomfortable symptoms after exposure to camphor balls, it is necessary to consult a doctor in time.