Develop an automatic vertical hydrogen determination auxiliary device for continuous casting tundish to replace manual oblique insertion for hydrogen determination.By using computer 3D design,strength simulation,and on-site practical application methods,complex spatial interference problems can be solved on-site.The cantilever beam strength meets the usage requirements,and the overall weight meets the platform weighing range.The difference between automatic vertical hydrogen determination and manual hydrogen determination by equipment has been verified in practical applications,and the analysis of automatic hydrogen determination data has higher reliability.The device has been successfully applied to the heavy rail production line of a certain steel plant,which has great application value and practical needs plant.