Flame-free catalytic gas burning water heater

The utility model provides a nonflame catalytic burning fuel gas water heater. Compared with the existing fuel gas water heaters, the wall of a combustion cavity of a burner of the utility model is a heat resisting ceramic, the wall of a combustion cavity is attached with a fuel gas oxidation catalyst layer, and a heat exchange water guiding copper pipe is arranged in the combustion cavity. The utility model has the advantages that the utility model has high heat efficiency up to 93 %, CO content in discharged tail gas is less than 0.01%, and the utility model is a new, safe, low consumption and high efficiency fuel gas water heater.