【Aim】 The main goals were to investigate the types, distribution, and morphological characteristics of the sensilla on the head of Archips micaceana larvae, and to analyze the morphological characteristics and functions of each sensillum. 【Method】 Scanning electron microscopy was used to observe the ultrastructure of the mouthparts and antennae of the fifth instar larvae of the A. micaceana 【Result】 We observed a total of seven types of sensilla on the mouthparts of the larvae, sensilla chaetica, sensilla trichodea, sensilla basiconica, sensilla styloconica, sensillum digitiformium, sensilla placodea, and sensory peg. Among these, sensilla chaetica had the widest distribution and sensilla basiconica was the most abundant. Moreover, we observed four types of sensilla on the antennae: sensilla chaetica, sensilla trichodea, sensilla basiconica, and sensilla styloconica. 【Conclusion】 This study clarified that the head of the A. micaceana larvae contains seven types of sensilla, among which the distribution of sensillum digitiformium may play a key role in the leaf-rolling behavior of the larvae.