This paper mainly discusses the characteristics and factors that influence space-time paths of middle-class daily activities

using the time geography and multilevel clustering methods

on the basis of the questionnaire survey on the working and weekend day activity diaries of 881 middle classes in 36 middle-class neighborhoods. The results show that the activity paths of middle class have differential forms on the working day according to the work locations

and can be clustered into 5 types including the straight path without work and other curve paths with stable jobs but different commuting distance. While

the activity paths of middle class have diversified forms on the weekend day according to the activity distances and durations

and can be clustered into 6 types such as curve path with short distance

middle-short distance of middle-class shopping and dining primarily

middle-long distance of middle-class shopping and errands primarily

and long distance of middle-class leisure and dinning primarily from home

etc. In addition

the characteristics of activity paths are various with different natural

socioeconomic and environmental middle classes. On the whole

the individual futures

urban space structure

industrial and institutional factors comprehensively play a vital role on the daily activities of middle classes

which lead to the space-time paths of those having unique characteristics. The study on the spacetime paths of middle-class daily activities contributes to reveal the daily routine of the middle class

and provides important basis for urban socioeconomic dynamic and urban refined management.