As far as the current policy is concerned, the health insurance card can not be used in the field, for those who are often in the field on business or after retirement is placed in the field of people, you can go to the health insurance center to register for the record, so that even if you see a doctor in a different place, after the consumption of medical expenses are available to you for reimbursement of the medical insurance location. Of course, if you live in the field for a long time or work in the field, you must go to the social security center registration, so that your permanent place and the place of health insurance can receive medical insurance, but if you go to the big city to see a doctor, may not be reimbursed to the amount of the small city to be higher. So far, our country has not yet realized the establishment of a nationally coordinated social security system. You can go through the unit to handle the procedure of transferring the medical insurance card, so that your five insurance can be placed together, otherwise, if you do it by yourself, you may not be able to do it thoroughly, and when you are in an emergency, you will be involved in a problem. You just need to fill in your relevant information carefully in the "urban workers' basic medical insurance registration form".