The invention discloses a boiler flue gas glass bead heat exchanger. The boiler flue gas glass bead heat exchanger comprises a smoke pipe connected with a first chimney on the top of a boiler. The smoke pipe is connected with the bottom of a heat exchange cavity. A second chimney is arranged on the top of the heat exchange cavity. A supporting plate is horizontally arranged in the heat exchange cavity. Air distribution nozzles are evenly arranged on the supporting plate and communicate with a lower cavity of the supporting plate. Each air distribution nozzle is provided with a glass bead layer provided with a heat exchange pipe. The lower part of the heat exchange pipe is embedded in glass beads. The boiler flue gas glass bead heat exchanger is used for smoke waste heat recycling of offshore oil platform boiler type equipment, the current situation that an offshore oil platform is not provided with an efficient small smoke heat exchanger is avoided through the device, and a very important significance is achieved for energy saving and emission reducing of the offshore platform boiler type equipment.