The present invention provides a completely novel molting hormone receptor, which is used for efficiently screening a substance that can be applied to a disinfestant or the like. An insect molting hormone receptor comprising the following polypeptide (a) and polypeptide (b) or (c): (a) a polypeptide having the amino acid sequence shown in SEQ ID NO: 1; (b) a polypeptide having the amino acid sequence shown in SEQ ID NO: 2; and (c) a polypeptide having the amino acid sequence shown in SEQ ID NO: 3.