A simulated flame humidifier, comprising a humidifying assembly (1) for generating mist and a mist guiding assembly for guiding the mist. One end of the mist guiding assembly is connected to the humidifying assembly (1); the mist guiding assembly comprises a mist guiding tube (2), a mist outlet grid (3), and a lighting assembly (4); the lighting assembly (4) and the mist outlet grid (3) are both disposed in the mist guiding tube (2); the lighting assembly (4) is disposed above the mist outlet grid (3); the mist outlet grid (3) comprises a fixing plate (31) and a plurality of mist-guiding inclined surfaces (32), the mist-guiding inclined surfaces (32) being successively arranged along the length direction of the fixing plate (31). The humidifier can form a realistic flame effect.