The travel contract is only signed by adults, is it okay if it is not signed by children?

No. According to the information on Ctrip's official website, if the travel contract involves bringing children to the destination, the specific circumstances of the children must be stated, such as name, age, gender, etc. If children are not specifically mentioned in the contract, it is generally assumed that no mention is needed. However, for the sake of insurance and to avoid disputes or accidents during travel, it is best to clearly explain the issue of children in the contract. It is recommended that before signing a contract, you consult the relevant staff of the travel agency to understand the specific information of the contract.