Is it illegal to carve a name as a souvenir at a tourist attraction?

Illegal! But at present, we can only say that there are too many people in China to punish those who break the law.

The following are the relevant legal provisions for your reference.

Article 63 of the Law of People's Republic of China (PRC) on Public Security Administration Punishment shall be given a warning or a fine of not more than 200 yuan; If the circumstances are serious, he shall be detained for more than five days and less than ten days, and shall be fined more than 200 yuan and less than 500 yuan.

Therefore, no matter from the legal level or the moral level, you should not mark your name on the tourist attractions as a souvenir.