The invention discloses a low-noise energy-saving fire grate and aims at providing an improved low-noise energy-saving fire grate. The low-noise energy-saving fire grate comprises a fire grate main body. A diffusion cavity is formed in the upper end of the main body and internally provided with a burning inner core. The low-noise energy-saving fire grate is characterized in that two flow deflectors are arranged on the inner side of the burning inner core; a plurality of first gas-guiding grooves transversely arranged are formed in the outward side of each flow deflector; second gas-guiding grooves corresponding to the first gas-guiding grooves are formed in the diffusion cavity; a plurality of gas-guiding holes used for communicating the first gas-guiding grooves with the second gas-guiding grooves are formed in the lower end of the side wall of the burning inner core; sunk-type fuel gas channels are formed by the first gas-guiding grooves, the gas-guiding holes and the second gas-guiding grooves; fuel gas flow on the outermost side is straightened out through the sunk-type fuel gas channels, so that noise is relatively much smaller when fuel gas is burnt; the multiple fuel gas channels are spaced, oxygen mixing is also convenient, and thus the burning efficiency is improved; the low-noise energy-saving fire grate has the characteristics of being delicate in structure, low in cost and noise and capable of saving energy.