If the pain in the arm after cardiac imaging is simple, it can be relieved by taking painkillers as prescribed by the doctor. If it is hematoma or bleeding formed by contrast medium and puncture operation, then you need to seek medical treatment to stop bleeding and cold compress treatment. 1. Painkillers: The pain in the arm after cardiac imaging may be caused by local muscle injury or nerve compression and primary pain, which can be effectively relieved by taking painkillers under the guidance of doctor, such as ibuprofen, celecoxib and other painkillers. 2. Hemostatic treatment: As the cardiac imaging operation process needs to select the puncture point for the injection of contrast medium. Therefore, if there is a small amount of bleeding at the puncture site, it may cause pain in the arm, so you can choose to perform surgery to stop bleeding, or you can also choose to take hemostatic drugs under the guidance of the doctor, such as vitamin K, thrombin and so on. 3. Cold compress: after cardiography, the local puncture point and the location involved in the puncture needle can easily cause hematoma under the condition of stimulation and injury, at this time, you can effectively promote the recovery by applying appropriate cold compress to the hematoma site to help relieve pain. After cardiography arm pain, first need to take pictures to clarify the specific cause of the disease, under the guidance of the doctor to choose the appropriate drugs, careful use of medication.