The invention discloses a bell type blast furnace smelting method by using small-size sinters. The method comprises the steps as follows: loading, that is, ore and coke both containing the small-size sinters are added into a bell type blast furnace; blowing, specifically, air blast kinetic energy is controlled to be 150-230kJ / s, the air blast temperature is not lower than 1,180 DEG C, and the air blast oxygen enrichment percentage is not lower than 1 percent; wherein, the small-size sinter comprises the following components by weight percentage: 45-55 percent of sinter which is 3-5 mm in particle size, 35-45 percent of sinter with particle size greater than 5 mm and 0-20 percent of sinter with particle size smaller than 3 mm. According to the bell type blast furnace smelting method by using small-sized sinter, disclosed by the invention, the defect that the small-size sinter cannot be used by a bell type blast furnace for smelting is overcome, and by regulating process parameters, the normal production is ensured and the economic benefit is improved. Moreover, the processing cost of sorting the grades of the singers is reduced by recovering the small-sized sinters in returned ore into the blast furnace for smelting. Furthermore, by adopting the small-size sinters, the state of the material shortage of blast furnace is eliminated, and the cost of raw materials is lowered.