Special attention should be paid to protecting the joint and avoiding the risk of dislocation when riding in a car after hip replacement surgery. When entering the vehicle, the operated leg should go in first, maintaining an angle between the trunk and the lower limb greater than 90 degrees. The front seat can be slightly reclined to alleviate pressure. Opt for a spacious seat and adjust it to an appropriate height to ensure sufficient support for the knees and hips, while avoiding crossing the legs or excessive extension. The seat belt should avoid the surgical area, with padding used to adjust its position if needed. Long-distance travel should be avoided during the early postoperative phase. If prolonged car travel is necessary, it is advisable to stop every 1-2 hours to mobilize the joint and use supportive padding for enhanced comfort. Patients who undergo the direct anterior approach have a lower dislocation risk but must still adhere to medical instructions. During rehabilitation, maintain weight control, perform doctor-guided functional exercises, and attend regular follow-up examinations. When entering or exiting the vehicle, utilize crutches or assistance to prevent sudden twisting or significant jolting. All actions should strictly follow the attending physician's specific recommendations, with immediate medical consultation if discomfort arises.