PROBLEM TO BE SOLVED: To provide a space recognition system, a space recognition device, a space recognition method and a program capable of improving the estimation accuracy and stability of a self position. A space recognition apparatus 100 includes: a space recognition unit 101 that recognizes a three-dimensional shape of a physical space and generates spatial data; a self-position estimation unit 103 that estimates a self-position in the physical space; A spatial data integration unit 105 that generates integrated spatial data that integrates spatial data generated by another spatial recognition device, and a self-position that transmits a self-position expressed based on the integrated spatial data to another spatial recognition device. And a sharing unit 107. [Selection diagram] Fig. 3
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