Long-term sedentary work will lead to many diseases, but the current office furniture has not effectively solved this problem. The work aims to solve the problem of sedentary work by studying the proactive interaction mode of intelligent lift table and its user emotional experience and provide new strategies for office furniture design. Based on the research on the related achievements of proactive interaction, four levels of proactive interaction modes of intelligent lift table were proposed. Based on the prototype of the intelligent lift table simulated by the Wizard of Oz approaches, the SAM scale was used to measure the emotional experience data of 60 subjects on four levels of proactive interaction under high and low intensity work tasks, and conduct comprehensive analysis based on behavior observation and interview results. Then, the design strategy of the proactive interaction mode of the intelligent lift table was proposed. Under the high and low intensity tasks, the emotional experience of the subjects on the four levels of proactive interaction has significant differences in pleasure, arousal and dominance. The emotional experience of Level 2 (semi-proactive asking for instructions) under the two tasks is better than that of other three levels, and this proactive interaction mode as an intelligent lift table can be preferentially selected to promote the emotional experience of users and solve the problem of sedentary work at the same time. Based on this conclusion, three design strategies are proposed to provide ideas for future intelligent office furniture design.