It is illegal to change the label of clothes. This behavior violates China's trademark law and infringes the trademark rights of trademark holders.

Article 57 of the Trademark Law commits one of the following acts, which is an infringement of the exclusive right to use a registered trademark:

(1) Using the same trademark as its registered trademark on the same commodity without the permission of the trademark registrant;

(2) Without the permission of the trademark registrant, using a trademark similar to its registered trademark on the same kind of goods, or using a trademark identical with or similar to its registered trademark on similar goods is likely to cause confusion;

(3) selling goods that infringe upon the exclusive right to use a registered trademark;

(4) Forging or unauthorized manufacturing of registered trademark marks of others or selling forged or unauthorized registered trademark marks;

(five) without the consent of the trademark registrant, the registered trademark is changed and the goods with the changed trademark are put on the market again;

(6) Deliberately facilitating the infringement of the exclusive right to use a trademark of others and helping others to commit the infringement of the exclusive right to use a trademark;

(seven) causing other damage to the exclusive right to use a registered trademark of others.