Hiccups in liver cancer are usually characterized as persistent and accompanied by fever and diarrhea. Hiccups of liver cancer are usually persistent and difficult to be relieved. As enlarged liver cancer cells often invade the diaphragm, causing the diaphragm to be stimulated, hiccups will occur, and the cancer cells of liver cancer patients will persist and progress if not intervened, so hiccups will be persistent and cannot be relieved; due to the fact that liver cancer will also lead to fever and diarrhea for a long period of time, etc. In daily life, many factors can cause hiccups, such as eating fast and eating well. In daily life, hiccups can be caused by various factors, such as eating too fast or inhaling too much air, which leads to the involuntary movement of diaphragm, but in this case, it is usually not persistent and can be relieved after a period of time and no more hiccups can occur. Therefore, if hiccups are serious and accompanied by other symptoms, it is recommended to go to the hospital for timely consultation and examination to rule out whether they are caused by liver cancer to avoid serious harm to the body.