A planting structure includes a trough and a plurality of lateral covers. The trough has a hollow space and a planting space, and a canal is formed inside of the trough； the lateral covers cover a lateral side of the trough and seals off the planting space. Accordingly, the planting structure can directly perform cycled transmissions of moisture or a gas via the canal, so as to control growth conditions such as temperature and humidity in the planting space and recycle nutrient solutions and excessive moisture, thereby benefitting crops or growth of the crops and achieving environmental protection and energy saving. In comparison to the conventional indoor organic cultivation, which is necessary to control the temperature and the humidity of the whole indoor space, the present invention only needs to control the pipelines with respect to the root portions of plants, and thus is easier to control and more energy-saving.
