"Plastic Formula Design" is a practical course. How to combine theoretical teaching with practical operation organically plays an important role in cultivating students' ability to solve practical industrial production problems by using theoretical knowledge and in developing innovation and entrepreneurship by using the knowledge they have learned. This paper explores the reform of theoretical teaching and practical teaching in the course of plastic formula design. In the teaching practice

the teaching quality is improved through the reform of learning method guidance

classroom interaction design

comprehensive experiment setting and so on

so that students can master the plastic products and formula design process comprehensively

and cultivate and improve students' synthesis quality

in order to they can better enter the society and develop expertise.