The utility model discloses a deposition shock chamber is prevented to gas making stove, including shock chamber's casing, downtake, tedge, deflector cup and spray assembly, each part is all installedinside shock chamber's casing, and spray assembly sprays the ring canal and passes through connecting pipe and quench water inlet tube intercommunication including spraying the ring canal and being used for fixing the connecting piece on quench water inlet tube with spraying the ring canal, spraying the ring canal and encircleing the periphery setting of tedge, spray the ring canal and be provided with three row at least shower nozzles, every row of shower nozzle all is on a parallel with the center pin setting of spraying the ring canal, arranges the shower nozzle in the middle of these three rows of shower nozzles are respectively, arranges shower nozzle and interior row of shower nozzle outward, middlely arranges that the shower nozzle is vertical to be set up down, arranges outward that the shower nozzle slope is outside to be set up, interior row of inside setting of shower nozzle slope. Upper portion sets up and sprays flush assembly in gas making stove shock chamber, sprays thespraying hole who evenly sets up three angle on the ring canal, and the sparge water evenly sprays to the shock chamber, in time washes elimination shock chamber deposition problem to the coal ash dirt on the quench locular wall to the adhesion.