The invention discloses a multi-mode interaction method and a system for an intelligent robot. The intelligent robot is loaded with a robot operating system. The method comprises the following steps: a phrasing processing step: multi-mode data is obtained, voice interaction data to be output is generated according to the multi-mode data, and text data corresponding to the voice interaction data is phrased; an emotion data obtaining step: emotion information included in each clause is analyzed, and a lower computer instruction set is generated; and an emotion expression step: the lower computer instruction set is issued to hardware actuation parts corresponding to modes, and all the hardware actuation parts are controlled to actuate multi-mode outputting based on phrasing results. The method can enable the robot to express multiple emotions in one word, enables the robot to achieve higher intelligence and humanization to satisfy user demands, and enhances multi-mode interaction capacity of the intelligent robot to improve the user experiences.