The invention relates to a Mg-Al series alloy strong magnetic field aging thermal processing method. It includes the following steps: solid melting for the aging Mg-Al series alloy contains 6-10wt% aluminum; putting into 8-20tesla even static magnetic field to take aging treatment at 160-230 degree centigrade for 12-24h. The invention uses magnetic field to limit discrete precipitation, increase continuous precipitation, the second kind and the third continuous precipitation at the same time to improve Mg-Al series alloy performance. |