To provide an agricultural greenhouse made of a relatively easy structure, sufficiently securing its strength, enabling extension of durable years, and sufficiently supporting various devices provided inside the greenhouse, and even if a multi-span agricultural greenhouse with relatively short intervals between posts, enabling movement through buildings inside the greenhouse.

This agricultural greenhouse 10 is formed by arranging a plurality of tubing materials 11 and 12 formed in an almost arch-like shape at prescribed intervals in the depth direction, connecting each of the tubing materials 11 and 12 in the orthogonal direction with beam materials 13, 14 and 15 to form a framework, and covering a film material F from an upper part thereof. Furthermore, frame-like internal structures 30 and 30 which are connected to the framework and are adjacent to or touch internally the inside of the framework are arranged in the inside of both gable surfaces 20 and 20 so as to support various devices provided inside the agricultural greenhouse 10.

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