The invention relates to a method and a technique for wave guide convergence and large-area collection of light and other electromagnetic waves. A converging device is arranged to perform convergence in a parallel or crossed manner. Light guides are arranged on two sides of the converging device, an included angle between an incident face and an exit face is greater than a critical incidence angle, and the included angle between an exit face and a pipe wall on an opposite side is smaller than half of the critical incidence angle. The light guides make light refract in fixed direct, and all light are converged by a converging channel between the light guides. The converging device can serve as a light collector. Many light collector are jointed to form a large-area overall light collection surface. Many converging devices are connected in parallel, layered and converged stage by stage, and the stages are communicated by refracting inner wall pipes. A fixed static converging device is formed, and large-area and overall scattered light rays can be collected, scattered and converged. The high-density light converged can be transmitted to required positions. The method and the technique can be widely used in fields of lighting, photovoltaics, irradiation, heating and the like. In the invention, the structure is simple, the implementation is easy, the cost is low, the reliability is high, the market potential is large, the market prospect is bright, and the potential economic value and energy-conservation and emission-reduction value are high.