The reasons for the increase of alpha-fetoprotein can generally be seen as follows: alpha-fetoprotein is positive in blood during the regeneration period of liver cells, and liver cells will regenerate during acute and chronic hepatitis and liver cirrhosis, so the concentration of alpha-fetoprotein in blood will increase, some embryonic cancers, germ cell tumors, some digestive tract cancers, etc. , and the alpha-fetoprotein in the blood will also increase to varying degrees;