The National Chemical Engineering Experiment Competition for College students is a very important competition for chemical engineering majors in domestic colleges and universities. It consists of three parts: chemical engineering principle theory, chemical engineering unit simulation and chemical engineering principle experiment.  Due to the impact of the epidemic, in the past two years, the offline competition has been transformed into an online competition. Given the characteristics of the online competition, this paper introduces some experiences and gives insights in holding and participating in the online national Chemical experiment competition and provides some references and suggestions for the colleges and universities that will hold the chemical experiment competition in the future and for the teachers who will offer instructions in the competition.