In order to solve the problem of the increase of sintering process and the content of harmful elements caused by the addition of blast furnace bag ash in the sintering process, the influence of pregranulation of blast furnace bag ash and the change of sintering parameters on the sintering process and the removal rate of Zn, K and Na elements is studied. The results show that the pellets obtained by prepelletizing blast furnace bag ash can meet the basic requirements of sintering accessory. With the increase of the quantity of bag ash pellets, the sintering temperature increases, the sintering time prolongs,the vertical sintering rate decreases, the drum index and the yield of sinter increase first and then decrease, and the removal rate of Zn, K and Na elements first increases and then decreases. The increase of the distance between the bag ash pellets and the grate has little effect on the sinter indexes, but the removal rate of Zn element decreases significantly. The changes of carbon mixture,alkalinity and sintering negative pressure of bag ash pellets have little effect on the removal rate of Zn, K and Na.The suitable process parameters for sintering of bag ash pellets are as follows: the alkalinity of bag ash pellets is 1.93,the size is 3.8 mm, the proportion of small pellets is 4 %, the position in the material layer is 100 mm away from the grate, and the negative pressure of sintering is 10 kPa.