You can consider improving your mathematics level by self-study or attending training courses in high school, and strive for better results in the college entrance examination, so as to have the opportunity to enter financial mathematics and other related majors. In addition, you can also consider choosing other majors related to finance, such as economics and statistics, which also require a certain mathematical foundation. Financial mathematics is an interdisciplinary subject, covering mathematics, finance, statistics and other fields, and is one of the important branches of applied mathematics.