Atomizer and electronic atomization device

The utility model provides an atomizer and an electronic atomization device, the atomizer comprises a sealing element, an oil injection ring and a main body with a containing cavity, an oil injection hole communicated with the containing cavity is formed in the side wall of the main body, and the sealing element is sleeved on the main body to cover the oil injection hole. An oil injection port communicated with the oil injection hole and used for being matched with an oil squeezing bottle is formed in the position, corresponding to the oil injection hole, of the sealing piece, the oil injection ring is arranged on the sealing piece in a sleeving mode and is rotationally matched with the sealing piece, and a through hole used for exposing the oil injection port is formed in the oil injection ring. According to the atomizer, the space of the top of the atomizer can be saved, the diameter of the air channel arranged in the containing cavity has a larger adjustable range, and the atomization effect and taste of t