If you are taking warfarin, you can switch to rivaroxaban, but it is necessary to determine whether to switch or not according to the value of INR, and it is recommended to use the drug under the guidance of the doctor, and the dosage regimen is different in different cases. Compared with the traditional anticoagulant drug warfarin, rivaroxaban has the advantages of stable action, relatively fixed dosage, and no need for routine monitoring of coagulation indexes. Patients receiving warfarin for non-valvular atrial fibrillation who wish to switch to rivaroxaban should discontinue warfarin and start rivaroxaban when the INR is ≤3. Patients receiving warfarin for prophylaxis of DVT and pulmonary infarction should first discontinue warfarin and initiate rivaroxaban therapy when the INR is ≤2.5. Remember, unlike warfarin, INR is not used to monitor the anticoagulant efficacy of rivaroxaban. Patients are advised not to judge or diagnose on their own based on one result, but to seek timely medical attention, where the doctor will analyze the situation and clarify the diagnosis.