This study, targeting Chinese idioms of the ‘酸’ and ‘辣’ series, analyzed the process where the gustatory stimulus is combined with multisensory experiences and expanded into social and emotional meaning within the framework of Conceptual Blending Theory (CBT). For the analysis, most of the examples of the two series of idioms were collected from a corpus. The findings showed that idioms of the ‘酸’ series tended to embody negative emotions such as sadness, jealousy, bluff, pain, and poverty as the sour stimulus is transferred to the senses of touch, smell, hearing, and sight. On the other hand, the idioms of the ‘辣’ series mainly convey spicy stimulus through touch and sight, highlighting strong emotions such as cruelty, harshness, passion, pain, and impatience. In both families, gustatory experiences merge with multisensory stimuli and socio-emotional codes, creating a blending space that allows listeners to intuitively experience characters' personality, actions, and situations. These results show that Chinese idioms serve as an important linguistic device that conveys emotional meaning by combining sensory experiences with cultural schemas.