Financial mathematics is a new frontier subject in recent years. It uses
mathematical tools to study and analyze the theories and phenomena in finance,
establishes the corresponding mathematical model, and carries out quantitative
analysis such as theoretical analysis and numerical calculation, so as to find the
internal laws of Finance and guide practice. In the process of financial mathematics
teaching, teachers must consider the applicability and effectiveness of mathematical
tools. In the proof of some propositions, the ingenious use of the strategy of copying
asset portfolio can simplify the difficulty of financial mathematics teaching, make the
process of proof more complex and concise, and achieve the teaching effect of making
the difficult easy.