If you don't win the prize in the international or domestic competition of mathematical modeling, it means that you didn't pass the initial evaluation or final evaluation, or didn't get a high enough score in the evaluation process. This may be because the solution is not perfect, the model is not accurate, or the understanding and analysis of the problem is not sufficient. Failure to win the prize does not mean failure, and further study and improvement are needed to improve the mathematical modeling ability. We can improve the level of mathematical modeling by analyzing the solutions of award-winning teams, attending training courses, reading relevant literature and studying relevant knowledge in depth. Don't be discouraged, keep working hard and pursue progress.