Laser multi-channel solder ball welding air leakage prevention spraying and sucking device and spraying and sucking method

The invention discloses a laser multi-channel solder ball welding air leakage prevention spraying and sucking device and a spraying and sucking method. The device comprises a sucking assembly; the sucking assembly comprises a sprayer fixing plate; the sprayer fixing plate is connected with a communicating pipe connector and a communicating sprayer; and the sprayer is provided with a plurality of solder ball sucking and spraying pipelines and air channels. A leakage prevention assembly is further arranged in the sprayer and comprises an adjusting piece, the adjusting piece is located in an airchannel in the solder ball sucking and spraying pipeline, a vent hole capable of being communicated with the solder ball sucking and spraying pipeline is formed in the adjusting piece, a movement structure of the adjusting piece is also arranged, the movement structure is connected with the adjusting piece, and the leakage prevention assembly also comprises an installation part, and the installation part is connected with