Problem to provide a container for an electromagnetic cooker which can be heated corresponding to impedance check frequency which differs depending on a manufacturer of an electromagnetic cooker or the like, can properly and easily set a heat generation characteristic, is excellent in marketability, configuration in use, disposability, handiness in cooking and the like, is suitable for retort foods, instant foods and the like, and exhibits high heating efficiency, means for resolution a container for an electromagnetic cooker includes a container body made of a non-conductive material and a conductive layer in a bottom portion of the container, wherein the ratio of resistance change (R−R0)/R0 of the conductive layer with respect to the impedance check frequency of a heating coil is set to 5.3 or more, and a ratio of inductance change (L−L0)/L0 of the conductive layer with respect to the impedance check frequency of the heating coil is set to −0.17 or less. Here, R indicates the high-frequency resistance (.OMEGA.) on a heating coil side with a load, R0 indicates the high-frequency resistance (.OMEGA.) on the heating coil side without a load, L indicates the inductance (.mu.H) on the heating coil side with a load, and L0 indicates the inductance (.mu.H) on the heating coil side without a load.