According to China's Measures for Punishment of Infringement on Consumers' Rights and Interests, it is illegal for restaurants to charge for providing disposable tableware. Catering operators must provide sterilized tableware that meets the national hygiene standards free of charge, and may not only provide paid tableware (including disposable sterilized tableware). If catering operators provide paid tableware and publicize it in a prominent position in the business premises and the service personnel prompt it, they can charge fees, but they may not force consumers to buy and use paid tableware in a disguised form.

Therefore, generally speaking, restaurants can't charge for providing disposable tableware.