Illegal construction is not only a hot issue of growing concern to urban residents but also a key problem in daily urban management, which negatively impacts social harmony. This study focuses on the governance of illegal land use and construction (two violations) in urban areas. It addresses the technical challenges of hidden and diverse forms of “two violations”, easy recurrence, limited discovery channels, and difficult data collection. It also addresses the issues of weak business connectivity, poor standardization, difficult-to-use land after dismantling, and low utilization rate in the governance of “two violations”. In this study, we designed a closed-loop process for urban land spatial governance of “classification, demolition, land vacation, and utilization”, studied technologies such as integrated collection and intelligent identification of “star–sky–land network”, and coordinated on-site verification of internal and external industries. A spatial governance platform was developed, fundamentally changing the discovery, identification, monitoring, verification, and service modes in the original “two violations” governance work.