The Internet of Things (IoT) Node-Objects refer to the perceptual layer devices which are essential resources to be integrated in IoT environment. However, the integration of IoT Node-Objects is generally a challenging issue, due to the facts that the IoT objects are always managed by different application systems and there are no unified storage and management solution for the information of IoT Node-Objects. Directory is a mature solution for overcoming the interconnection of open systems and the integration of heterogeneous systems. Lightweight directory access protocol (LDAP) demonstrated the superior performance to the above issues. This paper proposes a LDAP-based IoT Node-Object information management scheme which offers a unified solution to store and manage the information of IoT Node-Objects. Through applying it in a specific application scenario “urban road environment management”, this scheme is proved to be feasible and effective.