Yes According to the relevant provisions of the Contract Law of People's Republic of China (PRC), the conclusion of a contract between the parties is voluntary and they shall perform their obligations according to the contract. If parents borrow money with their children's ID cards and forge their signatures, which violates the contract and constitutes a breach of contract, the victim may ask them to bear the liability for breach of contract and compensate for economic losses. Forging a signature refers to the act of using another person's signature or forging another person's signature, which is illegal.