Can the hotel deduct Ctrip pre-authorization fee?

Of course. According to Ctrip official website's inquiry, as of June 27th, 2023, the hotel has the right to deduct Ctrip's pre-authorization fee in case of insufficient deduction. Pre-authorization refers to the advance payment, that is, after the merchant estimates the user's consumption amount, the corresponding amount is frozen in the user card, and after the user's consumption is completed, the merchant makes a formal settlement, which is equivalent to the deposit.