If you are accidentally stung by a poisonous bee, wash it with alkaline soap as soon as possible and then apply cold compresses with water or ice to the affected area. To prevent the bite of locusts (also known as bloodsuckers), you should first apply alkaline substances such as alcohol, gasoline, kerosene, soap and salt to your skin and clothes when entering mountainous areas to prevent the locusts from invading. If you are still not quite bitten, do not scratch it with your hands, because this scratching is likely to tear off its head and leave it inside the skin instead, leading to infectious diseases. It is better to pat the skin with your hand, or apply salt, sugar, lime, or smoke it with cigarettes or matches, and it will fall off naturally. After the locusts fall off, it is best to squeeze the wound immediately and let the blood flow out in an amount equal to the amount of blood sucked by the locusts.