Need. According to the query of WeChat official website, the details of credit card expenditure can only be known by opening the billing service. Therefore, WeChat plus credit card needs to open billing service. Ways to open billing service: open WeChat and bind accounts; Click the credit card "I" in the current column of the page and click "Add Friend"; Select the official account of WeChat and enter "Credit Card" in the search bar; Select to add a credit card, the user inputs the bill sending method to be opened, and clicks "OK"; Just follow the prompts to open it.