Abstract: To evaluate the effect of embolotherapy on liver tumors in order to optimize therapy, i.e. to minimize possible loss of lipiodol and to find better embolizing agents. Methods:Embolism treatment was performed in 98 cases with liver tumors using Sodium Alginate Microball (KMG ). Among the 98 cases, 52 were primary liver cancer, 30 were metastatic liver cancer, and 8 were liver hemangiomas. Results: After embolotherapy with KMG, the incidence of abdominal pain was 32.7%, of which 83% was slight or moderate. The incidence of fever was 49.3% after the embolism treatment, and no other side effects occurred. Routine postoperative symptomatic treatments were conducted, including odynolysis , liver preservation and anti - inflammatory therapy. The tumors were distinctly smaller after two embolizations. The embolotherapy eliminated blood flow in the tumor arteries within 2 months. Conclusion: Sodium Alginate Microball is a safe and effective embolizing agent,convenient to use and with good efficacy. It can overcome the loss of iodinated oil to reinforce the effect of vascular embolism and improve curative effect. It is well recommended that KMG be widely used in tumor embolotherapy.