The present invention relates to a manufacturing method of a melamine-based microcapsule. The method comprises: (a) adding melamine, 50-300 parts by weight of an aqueous formaldehyde solution based on 100 parts by weight of the melamine, and 0.01-10 parts by weight of alkaline hydroxide based on 100 parts by weight of the melamine, to adjust the pH value to 8-10, and then adding 100-400 parts by weight of polyamine-based compound having at least two amine groups based on 100 parts by weight of the melamine, followed by reaction, thereby forming a melamine-formaldehyde prepolymer； (b) salifying at least one resin selected from ethylene-malenic acid copolymer resin and styrene-malenic copolymer resin with alkaline hydroxide, thereby forming an emulsifier； (c) feeding a core material into the emulsifier, followed by stirring, thereby forming an oil in water type emulsion； (d) mixing the melamine-formaldehyde prepolymer with the oil in water type emulsion, followed by reaction at 40-80°；C； (e) feeding a compound reacting with formaldehyde into the reaction product of step (d), followed by reaction at 40-80°；C； and (f) feeding a metal or a metal compound reacting with formaldehyde into the reaction product of step (e), followed by reaction at 40-80°；C. The present invention can prevent a precipitation phenomenon； minimize the amount of materials added for reducing the residue amount of formaldehyde； maintain the efficacy of the core material in the capsule； and minimize the residue amount of formaldehyde.본 발명은, (a) 멜라민, 상기 멜라민 100중량부에 대하여 포름알데히드 수용액 50∼300중량부, 상기 멜라민 100중량부에 대하여 알칼리수산화물 0.01∼10중량부를 첨가하여 pH를 8∼10으로 조절하고 상기 멜라민 100중량부에 대하여 적어도 2개의 아민그룹을 갖는 폴리아민계 화합물 100∼400중량부를 첨가한 후 반응시켜 멜라민-포름알데히드 전중합체를 형성하는 단계와, (b) 에틸렌-말레인산 공중합 수지 및 스티렌-말레인산 공중합 수지 중에서 선택된 1종 이상의 수지를 알칼리수산화물로 염화시켜 유화제를 형성하는 단계와, (c) 상기 유화제에 심물질을 투입하고 교반하여 유상/수상 에멀젼을 형성하는 단계와, (d) 상기 멜라민-포름알데히드 전중합체와 상기 유상/수상 에멀젼을 혼합하고 40∼80℃에서 반응시키는 단계와, (e) 상기 (d) 단계의 반응 결과물에 포름알데히드와 반응하는 화합물을 투입하고 40∼80℃에서 반
