A transfer mechanism, comprising: a driving component; a fixed frame (2, 400); and a conveyor belt (1, 300) surrounding an outside of the fixed frame (2, 400); characterized in that the driving component is configured to drive the conveyor belt (1, 300) to rotate; a solar cell, a solder ribbon and a film (200, 104) are stacked sequentially on the conveyor belt (1, 300) from top to bottom; the film (200, 104) is configured to cover and stick the solder ribbon to the solar cell; the film (200, 104) is provided with an air-permeable zone in a projection area of the solar cell; the conveyor belt (1, 300) is provided with a first air hole (a) running through the conveyor belt (1, 300); the fixed frame (2, 400) is provided with an air hole group; a first end of the air hole group is attached to a bottom of the conveyor belt (1, 300), and a second end of the air hole group is connected to an external air source to suck air; the air hole group comprises a second air hole (b) and a third air hole (b); the driving component is configured to drive the conveyor belt (1, 300) to rotate, so as to drive the solar cell, the solder ribbon and the film (200, 104) to move; when the conveyor belt (1, 300) is operated, the second air hole (b) is communicated sequentially with the first air hole (a) and the air-permeable zone to form a channel S1, and a first negative pressure is formed between the channel S1 and a bottom surface of the solar cell, such that the solar cell stacked on the solder ribbon is held and fixed; and the conveyor belt (1, 300) is also provided with a fourth air hole (a); the fourth air hole (a) does not communicate with the air-permeable zone, and is communicated with the third air hole (b) to form a channel S2; and a second negative pressure is formed between the channel S2 and a bottom surface of the film (200, 104), so as to hold and fix the film (200, 104). a driving component; a fixed frame (2, 400); and a conveyor belt (1, 300) surrounding an outside of the fixed frame (2, 400); characterized in that the driving component is configured to drive the conveyor belt (1, 300) to rotate; a solar cell, a solder ribbon and a film (200, 104) are stacked sequentially on the conveyor belt (1, 300) from top to bottom; the film (200, 104) is configured to cover and stick the solder ribbon to the solar cell; the film (200, 104) is provided with an air-permeable zone in a projection area of the solar cell; the conveyor belt (1, 300) is provided with a first air hole (a) running through the conveyor belt (1, 300); the fixed frame (2, 400) is provided with an air hole group; a first end of the air hole group is attached to a bottom of the conveyor belt (1, 300), and a second end of the air hole group is connected to an external air source to suck air; the air hole group comprises a second air hole (b) and a third air hole (b); the driving component is configured to drive the conveyor belt (1, 300) to rotate, so as to drive the solar cell, the solder ribbon and the film (200, 104) to move; when the conveyor belt (1, 300) is operated, the second air hole (b) is communicated sequentially with the first air hole (a) and the air-permeable zone to form a channel S1, and a first negative pressure is formed between the channel S1 and a bottom surface of the solar cell, such that the solar cell stacked on the solder ribbon is held and fixed; and the conveyor belt (1, 300) is also provided with a fourth air hole (a); the fourth air hole (a) does not communicate with the air-permeable zone, and is communicated with the third air hole (b) to form a channel S2; and a second negative pressure is formed between the channel S2 and a bottom surface of the film (200, 104), so as to hold and fix the film (200, 104).