Method 1: Call the official customer service hotline of the relevant airline and select the relevant manual service. First, consult the location of the ticket and see if the passenger's conditions meet the seat selection criteria. If it has arrived, the customer service can handle the seat selection for you in advance. Method 2: swipe your card at the airport self-service check-in machine, and you can also choose a seat when you query flight information. Method 3: Check in at the manual counter before boarding, or ask the staff to choose seats. (The premise of these two points is that the cabin and passenger conditions meet the seat selection criteria. ) Method 4: Go to the relevant airline to choose a seat in official website. Precautions for boarding: Arrive at the airport two hours in advance. Generally speaking, because the airport is very big after all, the process from checking in at the airport to boarding is time-consuming, and there are still many roads to walk before boarding. The plane is usually late, so in order to avoid missing the plane, we must arrive at the airport in advance. It is forbidden to carry prohibited items. Such as large-capacity charging treasure, large-capacity liquid goods, lighters and other dangerous goods, shall not be carried. Don't take too much luggage, or you need to check it. Generally speaking, the weight of luggage stipulated on the plane can be determined. If you are overweight and need to check in, it will take more time to check in. Don't eat too much before boarding. It is normal that there will be obvious bumps during take-off. It may be uncomfortable to fly for the first time, and it is easy to feel sick and vomit if you eat too much. Make-up water and skin care water should not exceed 100ml. Girls, in particular, should bring cosmetics and other items. It should be noted that some liquids should not exceed 100ml, and too much should be checked.