The city planning quick topic design is a part of the city design course in many urban planning colleges.It can help stimulate the students’off-handed creativity and image expression ability.So it is necessary to explore the teaching mode which can adapt to it and stimulate students’learning enthusiasm and creative ability.In the context of promoting the"classroom revolution"of higher education in China,the flipped classroom has received widespread attention in the higher education community.Based on this,after three years of teaching practice,the author adaptively adjusted and innovatively modified the basic model of flip classroom in the quick topic design teaching of the city design course,and has found a variant model applicable to this course,namely OCTIAS(objective-case exploration-trial and error-instructional video-activities-summary and promotion).Firstly,insert two sections before the video learning,including"case travel exploration"and"trial and error(in order to accumulate beneficial failures)".Secondly,in the classroom activities,sort out the problems reflected by the students,and organize the students to make self-evaluation,mutual evaluation and revise the trial and error plan before the class.Finally,think about the problems that may occur in the cities in the future and their spatial organization responses.The practice showed that compared with the traditional teaching mode,the OCTIAS model could make the city design course more interesting,and help the students to improve in the solidity of theoretical knowledge learning,the flexibility of practical operation,the initiative to think about realistic problems,and the ability of critical thinking and expression.