Children above 1㎡ need to buy tickets, and children above 1㎡ need to buy full-price tickets. According to Article 19 of the Regulations on Railway Passenger Transport, carriers generally don't accept children traveling alone (except for students who study by train and the carrier who agree to be supervised during the journey). Children traveling with adults whose height is 1.2 ~ 1.5m should buy children tickets; You should buy a full-price ticket if it exceeds 1.5 meters. Every adult passenger can bring a child under 1.2m free of charge. If there is more than one child, you should buy a child ticket for the extra part. Children's tickets should have the same seats as adult tickets, and their arrival should not be far away from adult tickets. When a child who rides a car free of charge or with a child ticket uses a sleeper alone, the fare difference should be charged. Other regulations on taking the high-speed rail. Article 51 Passengers' personal belongings shall be kept by themselves. The weight and volume of articles carried by each person free of charge are: children (including free children) 10 kg, 35 kg for diplomats and 20 kg for other passengers. The sum of the length, width and height of each article shall not exceed 160cm, and the rod-shaped article shall not exceed 200cm, but the EMU train shall not exceed 130cm and the weight shall not exceed 20kg. Disabled folding wheelchairs can be carried free of charge, which is not within the above scope.