A preignition chamber with surrounding air suitable for a rotational flow pulverized coal burner relates to the technical field of coal powder boilers. The invention aims to solve the problems of easiness in ash accumulation and easiness in slagging of the existing preignition chamber, so as to ensure long-term stable operation of the preignition chamber. The preignition chamber comprises a preignition chamber and a plurality of surrounding air nozzles, the rotational flow pulverized coal burner is arranged in the middle of the bottom end of the preignition chamber, a plurality of surroundingair nozzles are uniformly distributed in the bottom end of the preignition chamber along a circumferential direction, the surrounding air nozzles are inserted in the bottom surfaces of the preignitionchamber, the inside ends of the surrounding air nozzles are tightly attached to the inner drum wall of the preignition chamber, and gas is conveyed in the surrounding air nozzles. The invention is suitable for the rotational flow pulverized coal burner.