Abstract: This paper introduces a new self-made complexing desulfurizer (TS-2), and inspects its effects on the deep desulfurization of refinery C₄ feed gas. The results show that under atmospheric pressure, when the volume of packed bed is 100 mL and the amount of the liquid paraffin is 40 mL, the optimal performance parameters are as follows: the dosage of TS-2 is 10mL, the temperature is 35 ℃ and C₄ air velocity is 100 h^-1. TS-2 can help reduce the total sulfide of the refinery C₄ from 198.3 mg/m³ to below 0.1 mg/m³, and meet the purification index demand of poly-1-butene which requires that the sulfide should be less than 1.0 mg/m³. Under the optimal condition, the saturated sulfur capacity is 52 g/L. TS-2 can be regenerated by heating and nitrogen stripping, and can be circularly used 10 times under laboratory conditions, 5 times is recommended.This paper puts forward a kind of operation technology, which has three absorbers for the deep removal of organic sulfide in refinery C₄, and has feasibility of industrial applications.