Synthesis method for cationic bleaching activating agents with surface activity

The invention relates to a synthesis method for cationic bleaching activating agents with surface activity, belonging to the field of fine chemical engineering. According to the method, a series of cationic bleaching activating agents with different carbon chain-length quaternary ammonium salt groups are synthesized by adopting alkyl dimethyl tertiary amine, 4-(chloromethyl)benzoyl chloride and lactam as intermediates. The leaching activating agent has stronger affinity on the surface of a material with surface electronegativity in an aqueous solution, can react with hydrogen peroxide on the surface of the material to produce extremely active peroxy acid, can bleach the material at a low temperature so as to effectively remove the pigment impurities on the surface of the material. The cationic bleaching activating agent can be used for industrial bleaching and household washing of textiles.