Provided is a novel pest control agent, particularly an insecticide or a miticide. A pyrazole derivative represented by general formula (1) and a pest control agent. In formula (1), A1 represents -N(O)m2 or -CR1 R1, R3, and R4 each independently represent a hydrogen atom, a halogen atom, C1-C6 alkyl, or the like Ra represents a hydrogen atom, C1-C6 alkyl, or the like Rb represents -C(O)R7, - C(O)N(R8a)R8, or the like R7, R8, and R8a each independently represent a hydrogen atom, C1-C6 alkyl, or the like and m1 represents an integer of 0 or 1.
