The invention discloses liquid food heating equipment comprising a heating furnace body. The heating furnace body is a cylindrical furnace body structure arranged transversely. A cylindrical furnace cavity is formed in the heating furnace body. A feeding disc is coaxially arranged at the left end in the furnace cavity and internally provided with an annular feeding cavity. A discharging disc is arranged at the right end in the furnace cavity and internally provided with a discharging cavity. The liquid food heating equipment is simple in structure, in the process that high-temperature flue gaspasses through a flue gas discharge channel, combustion air flowing in a combustion air channel in the outer side is heated continuously, meanwhile, a gas supply pipe on the inner side is preheated,thus the combustion air discharged around into the furnace cavity in a dispersed mode through hollowed-out holes evenly distributed in a circumferential arrayed mode is also preheated high-temperaturecombustion air, and accordingly, the combustion intensity and combustion efficiency in a furnace are further improved.