A semi-regenerative reforming catalyst comprises an alumina carrier containing sulfate radicals, group VIII metal accounting for 0.1-2.0% of the mass of alumina in the carrier, group VIIB metal accounting for 0.1-3.0% of the mass of alumina in the carrier, halogen accounting for 0.5-3.0% of the mass of alumina in the carrier, and sulfate radials accounting for 0.45-3.0% of the mass of alumina in the carrier; and the pore radius volume distribution of the alumina carrier containing sulfate radicals is characterized in that pores with the radius being smaller than 3 nm account for 25-35% of the total pore volume, pores with the radius of 3-5 nm account for 50-65% of the total pore volume, pores with the radius of 5-10 nm account for 5-15% of the total pore volume, and pores with the radius being greater than 10 nm account for 0.8-2% of the total pore volume. The catalyst is used in a naphtha reforming reaction, and has high aromatization activity and good aromatization selectivity.