Abstract: Sugar beet is one of the important raw materials in the sugar industry,In our country, low per unit area yield and low sugar content become important restrict factors in the production of sugar beet. Four aspects of the relationship between root weight and sugar content, the impact of varieties on root growth and sugar content, the relationship between photosynthetic characteristics and growth of root and sugar content, the impact of plant growth regulators on root and sugar content were summarized in this article. The idea would be provided for researching root yield and sugar content in the future.