A neutralizing and separation device for saponifying rosin is made by installing a thermostat heater, an agitator and a pH meter in a sewage disposal tank, an automatic control valve is respectively connected with an acid storage tank and the pH meter, batik waste water is filled in the sewage disposal tank, and the thermostat heater, the agitator and the pH meter are placed in batik waste water inside the sewage disposal tank. The neutralizing and separation system for saponifying overcomes the difficulty of batik waste water pollution ever since a long time ago and is characterized by simple structure, high recycling rate of rosin, automatic heating and monitor and the like. Heating neutralizing and separation technique is employed, saponifying rosin in the batik waste water is relatively easily separated and extracted, and foams and peculiar smell are eliminated. The rosin separated and extracted can be refined and recycled in production. The device efficiently increases recycling amount and quality of rosin in batik waste water, plays a role in environmental pollution improvement, ecological environment prevention and natural resources saving, realizes circulating economy and achieves the effect of energy saving and environment beautification.