To provide a solar heat collection method and device, capable of restraining energy loss after sunlight is converted to thermal energy, and efficiently transmitting the thermal energy derived from the sunlight to a heat supplying part.

A transparent pipe 15 is provided at a position near the focus point of a pail type concave mirror 13, and metallic nano particle dispersant 16 circulated in the transparent pipe 15 and a heat supplying part is used, so as to form a solar heat collection device 12. The sunlight 14 is collected by the pail type concave mirror 13 and radiated to the transparent pipe 15, and the sunlight 14 passing through the pipe wall of the transparent pipe 15 is received in the metallic nano particle dispersant 16, so as to convert the sunlight 14 into the thermal energy in the metallic nano particle dispersant 16, and heat the metallic nano particle dispersant 16 itself in the transparent pipe 15. The metallic nano particle dispersant 16 itself whose temperature becomes the highest in the thermal energy converting system of the sunlight 14 by this heating, is introduced to the heat supplying part, so as to supply its retained heat.

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