A nebulizer (2) includes a medicament storage module (3) and a nebulizing unit (4). The medicament storage module (3) includes an inclined bottom wall (31), a tubular sidewall (32), and a guiding part (35). The inclined bottom wall (31) is inclined at an inclination angle (θ1). The tubular sidewall (32) is connected with a periphery of the inclined bottom wall (31). A storage chamber (33) is defined by the inclined bottom wall (31) and the tubular sidewall (32) collaboratively, and a liquid medicament is accommodated within the storage chamber (33). The tubular sidewall (32) has an outlet (34), and the inclined bottom wall (31) is extended downwardly to the outlet (34). The guiding part (35) is arranged around a junction between the inclined bottom wall (31) and the tubular sidewall (32). The nebulizing unit (4) is disposed on the medicament storage module (3) and aligned with the outlet (34). The liquid medicament outputted from the outlet (34) is nebulized into a plurality of mist droplets by the nebulizing unit (4).
