Online education is currently widely used to replace traditional face-face teaching and learning activities due to the recent COVID-19 epidemic. However, critical challenges exist in online education practice, such as the difficulty of teachers to learn about students’ status. Aiming at identifying the key conflict and conceptual design of a solution to improve online learning and teaching. This paper analyzes and tackles these barriers in online education using the Environment-Based Design (EBD) approach. A process consisting of environment analysis, conflict identification, and solution generation is applied to generate the solution for online education improvement. This novel solution suggests monitoring students’ whole bodies and facial expressions, which can be referred to by teachers for the adjustment of teaching contents. Experimental validation in the education of high school students is given to show the effectiveness of the proposed solution. The satisfaction rate is increased by around 20%.