The main purpose of the study is to investigate the key points of General Scholastic Ability Test in high school and to analyze the exam pattern. Choose the previous exam as a model, solve the problems and research. Finally, provide problem-solving skills and directions to high school students to solve math problems. The following are the outline of the thesis: First, categorize the previous exam into three main types: algebra, statistics and geometry. Second, investigate the problem-solving strategies and summarize the type of the question. Third, collect and analyze the categorized question to find out the exam pattern and give some advices.