The saying of one itch, two odor and three blackness in the pre-liver cancer stage is not standardized. Due to the condition of liver cancer, liver cancer patients will have the clinical manifestations of itchy skin, foul smell in body and mouth, black skin, black stool and dark circles under eyes. 1. Itchy skin: mainly due to the occurrence of jaundice caused by hepatocellular carcinoma, more bile salts are precipitated from the surface of the skin, which leads to itchy skin due to the stimulation of peripheral nerves of the skin. 2. Body odor and bad breath: body odor is caused by liver cancer, which impairs the function of liver and prevents toxins from being discharged out of the body, resulting in foul smell from the body. Excessive urea nitrogen and other metabolites in the form of ammonia gas will be discharged from the body through breathing, resulting in bad breath. 3. Dark skin, dark stools and dark circles under eyes: dark skin is due to the dysfunction of liver that the melanin in the body can not be effectively degraded and too much melanin is deposited on the skin. Hepatocellular carcinoma can have the complication of gastrointestinal hemorrhage, which manifests the symptom of black stool. Complications of hepatic encephalopathy may occur, and patients may have dark circles under eyes due to sleep disorder. If you have any of the above abnormalities or suspect liver cancer, it is recommended to go to regular hospitals to evaluate your condition and follow the doctor’s instructions for treatment, so as to avoid delaying your condition.