The utility model relates to a microorganism carbon-based slow-release fertilizer for flue-cured tobacco. A ceramic releaser (1) is used and the microorganism carbon-based slow-release fertilizer consists of a carbon-based slow-release fertilizer (2) and a microorganism slow-release fertilizer (3), wherein the ceramic releaser (1) consists of a cylinder (4), a cone (5), two baffles (6), an inner container (7) and a sealing cover (8); the cone (5) is positioned at one end of the cylinder (4); the cylinder (4) is in seamless connection with the cone (5); the sealing cover (8) is positioned at the other end of the cylinder (4); the cylinder (4) is connected with the sealing cover (8) through threads. The ceramic releaser with a slow-release function is used for loading the slow-release fertilizer, 'so that fertilizer regulating and control and slow-release effects are realized; the microorganism carbon-based slow-release fertilizer can be reused and recycled and is convenient and quick to apply.