Apply some kerosene to the nose and nose of the nanny's sheep and the lambs, or coat the buttocks of the lambs with the milk or urine of the nanny's sheep, and store the nanny sheep and lambs in a dark room. After a few hours, the sheepsitter recognizes the sheep. Lamb. It is also possible to force the lambs to eat multiple times, so that the nanny and the lambs recognize each other. The specific method is that one person fixes the ewes, and the other holds the ewes' two hind legs with their both hands so that the lambs can eat milk. Training can be successful.