High alpha fetoprotein does not necessarily mean cancer. It is a primitive protein that is found in some embryos of pregnancy or germ glands. It is also seen clinically in some gastrointestinal tumors, germ gland tumors, and pregnant women who also have mildly elevated fetoprotein. If elevated fetoprotein is found, appropriate tests, especially imaging tests such as ultrasound, CT or MRI, should be done. It is generally believed that if fetoprotein is greater than 400ng/ml, the possibility of hepatocellular carcinoma should be considered. Meanwhile, if there are occupying lesions in the liver detected by imaging tests, such as ultrasound, CT or MRI, and if the liver cancer can be combined with hepatitis B, the possibility of liver cancer is higher. If there are patients with liver cancer in the family, then increased AFP should be more alarming. If the fetoprotein is high and no lesion is found in the imaging examination, the fetoprotein and imaging examination should be reviewed once in three months or so with close follow-up.