To obtain a detergent for electronic parts for removing organic materials such as liquid crystals, or the like, remaining on the electronic parts such as a liquid crystal cell having micro gaps, excellent in detergent and rinsing properties, inhibiting the generation of corrosion of the electronic parts.

This detergent for electronic parts includes an ether carboxylate (A) expressed by the formula (1). [R1-O-(R2O)p-R3COO-]nXn+ (1) [R1 is a 1-25C hydrocarbon group, R2 is a 2-4C alkylene group, R3 is a 1-3C alkylene group, (p) is an integer of 1-50, (n) is 1 or 2, Xn+ is an alkali metal ion, an alkali earth metal ion, ammonium ion or an amine cation].