Answer: Yes, the husband committed a crime by using his wife’s credit card without telling her. According to Article 266 of the Criminal Law of the People's Republic of China: "Whoever obtains other people's property by fraudulent means shall be sentenced to fixed-term imprisonment of not more than three years, criminal detention or surveillance, and shall also or solely be fined; if the circumstances are serious, , shall be sentenced to fixed-term imprisonment of not less than three years but not more than seven years, and shall also be fined. "Therefore, if the husband commits a crime by using his wife's credit card without telling his wife, he may be held criminally responsible. In order to avoid this situation from happening, the following steps can be taken: 1. Both parties must be honest with each other, establish a good communication mechanism, discover problems in a timely manner, and solve problems in a timely manner; 2. Both parties must establish a good financial management system and clarify financial usage rights. , to avoid disputes; 3. Both parties should establish good credit card usage habits, clarify the scope of credit card use, and avoid unnecessary expenditures; 4. Both parties should check credit card bills regularly, discover abnormalities in time, and handle them in a timely manner; 5. Both parties should check credit cards regularly Be safe, detect potential risks in a timely manner, and take timely measures. Personal tips: Both parties should establish a good communication mechanism, be honest with each other, establish a good financial management system, clarify financial usage permissions, establish good credit card usage habits, check credit card bills regularly, and check credit card security regularly to avoid crimes. Behavior.