Healthcare is a crucial thread in the tapestry of social conditions that allow us, either individually or nationally, to fulfill our goals in life and attend to matters of ultimate concern. From 2000 to 2018, the rate of growth on health expenditure per capita was around 3.1 percent in the world. As the health expenditures are growing fast, healthcare has become a hot issue of social concern in every country. In recent decades, the medical expenditure has risen dramatically in the United States. Nowadays, the United States is the country with the highest medical expenditure, and far higher than the other countries. The health care system in the United States is controversial. This paper will analyze the characteristics and problems of the medical system in the United States through the specific study to the US medical system. Finally, according to the analyzed conclusions, the paper will propose policy suggestions.