The questionnaire is used to conduct a sample survey of 1 000 freshmen enrolled in 6 different types of colleges and universities in the Southwest in 2013. The survey shows that the major students choose are affected by family capital which also influences the equity of major choice for students to some extent. Students from highcapital families more tend to choose disciplines with higher employment rate and income, such as economic management, engineering, etc. because of their advantages of finance, culture and social status, while students from lowcapital families more tend to choose disciplines with lower employment rate and income, such as medicine, liberal arts and science. Therefore, in order to erase the inequity of college students’ major choice caused by family capital, measures should be taken to improve the funding system of higher education to reduce the burden on students from lowcapital families, to strengthen information assistance to ensure the rights to know about majors for students from lowcapital families and to create fair social environment to eliminate the confounding factors caused by high family social capital in major choices.