The purpose of the present invention is to provide a production method by which a methylene disulfonyl chloride compound can be obtained with a high yield using an industrially advantageous method in which the usage quantity of phosphoryl trichloride, which is a harmful substance, is reduced. Provided is a method for producing a disulfonyl chloride compound represented by formula (2) (in formula (2), R1 and R2 are the same as R1 and R2 in formula (1)) includes a step of reacting a carboxylic acid halide compound represented by formula (1): R1R2CHCOX (1) (in formula (1), R1 and R2 are each independently a hydrogen atom or a C1-C4 alkyl group in which a hydrogen atom may be substituted with a halogen atom, and X is a halogen atom), chlorosulfonic acid, and phosphoryl trichloride at a quantity of 2.0-10.0 moles relative to 1 mole of the carboxylic acid halide compound.本發明之課題在於提供一種削減身為有毒物質之三氯化磷醯的使用量而在工業上有利的方法,且其為可在高產率下得到亞甲基二磺醯氯化合物之製造方法。本發明之解決手段係一種以下述式(2)表示的二磺醯氯化合物之製造方法,包含使以下述式(1)表示的羧酸醯鹵化合物、氯磺酸及相對於該羧酸醯鹵化合物1莫耳為2.0莫耳以上10.0莫耳以下之三氯化磷醯進行反應的步驟:R1R2CHCOX (1)(式中,R1及R2各自獨立表示氫原子或是氫原子亦可被鹵素原子取代之碳數1~4之烷基,X表示鹵素原子。)(式中,R1及R2各自表示與式(1)中的R1及R2相同者。)。
