A data decision method, apparatus and system relate to the field of communications technologies, where they accurately and effectively analyze information included in fragmented data. The method includes obtaining, by a data decision apparatus, analysis conditions for data analysis, reporting, by the data decision apparatus, the analysis conditions to a cloud server such that the cloud server determines, according to the analysis conditions, a first data type that the data decision apparatus can process, obtaining, by the data decision apparatus, first data satisfying the first data type, where the first data is perception data generated by a human body device, performing, by the data decision apparatus, data analysis and data decision on the first data, and generating first decision data, where the first decision data is decision information of a data characteristic reflected for the first data.