An algae cultivation apparatus includes a light guide plate, at least one transparent circulating channel, at least one light emission module, an algae guide-in module, an algae collection module, a gas guide-in module, a gas collection module, a culture medium guide-in module, a temperature control module and a pH value control module. With the installation of the light guide plate and at least one light emission module, a 24-hour light source can be introduced to improve the production efficiency of an algae.