The Chemical Engineering Sub-alliance of University Alliance of the Silk Road (CES-UASR) is proposed and launched by the School of Chemical Engineering and Technology of Xi’an Jiaotong University. Till now, 42 universities from 10 countries have registered as the CES-UASR members. This online summer school of chemical engineering focuses on development frontier and technology of low carbon chemical engineering. It covers the topics of sustainable clean energy, new separation technology, small molecule catalysis, microbial electrochemical conversion method and etc. It includes ten lessons about these topics. The teachers come from Sweden, Denmark, Australia, Singapore, Malaysia, China and etc.