The present invention provide a tetrazolyl oxime derivative represented by formula (1) (in formula (1), X represents a halogen atom or the like, n1 represents an integer of 0 to 5, A represents a tetrazolyl group, Het represents a group represented by formula (4) or the like, in formula (4), R represents a halogen atom or the like, n2 represents an integer of 0 to 3, Z represents a group represented by formula (a), in formula (a), R 50 -R 53 represents a hydrogen atom or the like, n3 represents an integer of 0 to 2, n4 represents 1 or 2, n5 represents 0 or 1) or salt thereof, and a plant disease control agent containing the same as an active ingredient.
