Because liver cancer patients serious liver damage, Capacity decreased albumin synthesis, coupled with portal hypertension can often lead to ascites; When planting the peritoneal tumor cells, can also produce ascites, and more time for bloody ascites; near diaphragmatic rupture of the liver cancer nodules, will also enable ascites into bloody; near the transverse liver cancer directly at the Wang depression and pleural invasion, can cause bloody pleural effusion; tumor metastasis to the pleura, can cause bloody pleural effusion.