As a data line and solder worker in a factory, is the solder smoke harmful to your health?

absolutely harmful. Solder will produce metal smoke, which will be harmful if inhaled into the human body. For example, excessive tin will be detected in the blood, which will cause anemia, dizziness and so on, which is seriously life-threatening. Please take necessary personal hygiene protection measures. For example, the ventilation in the workplace should be strengthened, and individuals should wear gas masks.