Abstract: Objective To investigate the knowledge status of novel coronavirus pneumonia(NCP) among community residents in Beijing, explore its influencing factors, and provide clues and evidences for popular science or training in public health emergency prevention and control. Methods Cross-sectional design, self-designed questionnaire was used to conduct the online survey of 2 626 residents in 8 districts of Beijing from March 15 to 24, 2020. SPSS software was used to data statistical analysis. Results A total of 2 626 questionnaires were collected and 2 622 were valid. The average score of NCP among community residents was(85.9±11.8). The questionnaire includes 4 dimensions, 35 items. The scores of the four dimensions from high to low were: daily protection(94.1±11.9), isolation measures(91.3±10.4), clinical manifestations and diagnosis and treatment(77.1±20.9), pathogen and epidemiology(75.2±21.2). Multiple linear regression analysis showed that age, education level, doctors and nurses, gender were the influential factors, the difference was statistically significant(all P<0.01). The correct answer rates of different items in the four dimensions were as follows: daily protection was 99.0%-56.7%, isolation measure was 98.1%-58.1%, clinical manifestations and diagnosis and treatment was 96.8%-44.9%, pathogen and epidemiology was 97.4%-34.4%. Conclusion The knowledge of NCP among community residents in Beijing is well mastered, and the work of popular science in Beijing has achieved remarkable results, but the knowledge of etiology, epidemiology, clinical manifestations, diagnosis and treatment needs to be further strengthened. It is suggested that using information technology to carry out prevention and control work, communities should accurately analyze and interpret knowledge, formulate specific plans, guide correct knowledge orientation, and play a greater role in prevention and health education.