Abstract: As the infrastructure for realizing market-oriented allocation of data elements, the construction of a trustworthy data space is related to national digital sovereignty and industrial competitiveness. This study is based on the concept, foundation, function, and related theories of trustworthy data space, and constructs a three-dimensional model of "system technology ecology" for the construction of trustworthy data space. By breaking the "trust security value" triple paradox in the flow of data elements, it provides a systematic theoretical tool for the "trustworthiness controllability availability" of data elements in complex business environments. Research has found that: (1) The construction of trustworthy data space needs to follow the coordinated development logic of system, technology, and governance; (2) The core technology focuses on the dual breakthrough of privacy security and trusted verification; (3) At the level of governance logic, it is necessary to establish a mixed framework of multi subject collaborative governance and risk immune system; (4) The realization of the value of a trustworthy data space depends on the iterative adaptation of technical tools and institutional rules. The high-quality development of a trustworthy data space requires the establishment of a system that promotes institutional innovation, technological breakthroughs, and governance experiments in a coordinated manner. Firstly, we need to accelerate the promulgation of the "Measures for the Administration of Data Property Rights Registration". Secondly, we need to establish a national level data space technology laboratory. Thirdly, we need to explore a "regulatory sandbox" mechanism to promote cross-border data pilot projects.