Abstract: The complex environment of planetary surfaces, including atmospheric conditions, wind fields, dust, extreme temperatures, and radiation, presents significant challenges for maintaining the reliability of deep-space exploration spacecraft and their payloads. Ground-based environmental simulation testing has been demonstrated to be critical for mission success. In this study, current planetary environment simulation technologies and test facilities were systematically reviewed, with particular attention paid to two planetary atmosphere simulators (KM3-PAS and PMES) developed by the National Space Science Center of the Chinese Academy of Sciences. The results suggest that future developments in environmental simulation technology should align with China's forthcoming deep-space exploration initiatives and evolving space science requirements. More importantly, the fundamental role of experimental research in advancing deep-space exploration has been emphasized, and the establishment of small- to medium-scale test facilities is proposed to support planetary science and space biology research, thereby facilitating progress in these disciplines.