Legal analysis: The credit card can be used normally after being sued. As long as the plaintiff does not apply for the court's property preservation or freeze the defendant's bank account, the defendant can use the credit card normally; if the court allows the plaintiff's property preservation, a ruling must be issued and should be served to the defendant.

Legal basis: "Civil Procedure Law of the People's Republic of China"

Article 100 The people's court shall not be liable for any judgment that may be difficult to execute due to the conduct of one of the parties or other reasons. Or in cases that cause other damage to a party, based on the application of the other party, the people's court may rule to preserve the property, order the party to perform certain acts, or prohibit the party from performing certain acts; if the party does not file an application, the people's court may also rule to take preservation measures when necessary. measure. When the people's court takes preservation measures, it may order the applicant to provide a guarantee. If the applicant fails to provide a guarantee, the people's court shall rule to reject the application. After the people's court accepts the application, it must make a ruling within 48 hours if the situation is urgent; if it decides to take preservation measures, it must start implementation immediately.

Article 103. Property preservation shall be carried out by sealing up, detaining, freezing or other methods prescribed by law. After the people's court preserves property, it shall immediately notify the person whose property is preserved. If the property has been sealed or frozen, it shall not be seized or frozen again.