Rotating controlled electromagnetic ranges are the first with concealed knob design in the industry, equipped with retractable knob facilitating storage and cleaning, making interact more safe and effective. Novel rotating controlled fire power ring design, together with gleamy fire power bar, facilitates operation and can control fire power flexibly. The fire power bar indicating cooking fire power visually works with rotating control to quickly continuously switch fire power; wholly embedded panel design improves overall temperament of the product, grand and fine. Easy and flexible operation experience, appearance of quality effectively conceal the core attribute of electromagnetic heating, making users more safe to use, which is the basis of the product receiving good sales.