A haloalkylsulfonanilide derivative represented by general formula (I) or a salt thereof wherein R 1 represents a halo(C 1 -C 8 )alkyl group, R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 and R 10 represent hydrogen atoms, etc., n represents 1 or 2, A represents an oxygen atom, W represents an oxygen atom, X represents a halogen atom and m represents an integer of 0 to 4, are compounds useful as herbicides having both of remarkable herbicidal effect and characteristics such as excellent crop-weed selectivity. General formula (I):