It is a bit too young to travel to Yunnan with a one and a half year old baby. The climate varies greatly across Yunnan, so children should bring thick and thin clothes and keep them warm; ask restaurants to use less chili pepper when eating; carry some cold medicine, gastrointestinal medicine, etc. for children with you, and pay attention to various symptoms caused by acclimatization; and pay attention Sun protection, Yunnan’s ultraviolet rays are very strong. If you are going to Lijiang, due to the high altitude, you should pay attention to children's altitude sickness. If your children are too young, it is best not to go to the snow-capped mountains. In summary, pay more attention to your baby's reactions. It is not particularly recommended to take your children on long-distance trips.