According to a preferable embodiment of the present invention, a bubble generator comprises: a bubble liquid storage unit which has an enclosed storage space therein and stores bubble liquid in the storage space； an air supply unit which is connected to the bubble liquid storage unit and supplies air to the bubble liquid in the storage space； an aeration unit which is connected to the air supply unit, is sunk in the bubble liquid of the storage space, changes air into air bubbles, guides the air bubbles to the bubble liquid, and generates bubbles； and a bubble discharge unit which is connected to the bubble liquid storage unit and discharges the bubbles generated in the storage space. According to a preferable embodiment of the present invention, a greenhouse comprising the bubble generator comprises: an internal frame unit which has an accommodation space and is located on the ground； an external frame unit which is located on the outside of the internal frame unit to correspond to the internal frame unit on the ground； a frame back unit which is located between the internal frame unit and the external frame unit, has a filling space in a closed shape, and can be expanded and contracted； and a bubble generation unit which is connected to the frame back unit, generates bubbles, and fills the filling space. When the bubble generator generates bubbles, the bubble generation unit supplies the bubbles to the filling space and, consequently, expands the frame back unit. The bubble generator and the greenhouse comprising the same generates a large amount of bubbles in an easy manner, increases quality of the bubble at the same time, increases thermal insulation and thermal retention performance by using bubbles, continuously maintains thermal insulation and thermal retention performance for the greenhouse, and reduces maintenance costs.COPYRIGHT KIPO 2017본 발명의 바람직한 실시예에 따른 거품발생기는 내부에 밀폐된 저장 공간을 갖고, 상기 저장 공간에 거품액을 저장하는 거품액 저장부； 상기 거품액 저장부에 연결되어, 공기를 상기 저장 공간의 거품액에 공급하는 공기
