This paper addresses the pain points in the testing of intelligent ship application functions， such as complex interface adaptation， limited scenario coverage， and non-visualized verification processes， by designing a ship data simulation test platform. The platform centers on standardized interfaces and scenario-driven approaches， constructing a meta-model of communication protocols to resolve the universality issues of multi-device interfaces. By parametrically decomposing environmental， equipment， and task conditions， it dynamically generates comprehensive test scenarios covering normal， abnormal， and extreme operating conditions. Combining physical models and data-driven methods， the platform simulates equipment data generation， and upon receiving control commands， drives dynamic updates of ship states to form a closed-loop verification process. It also integrates a visualization module to display the impact of commands on ship status in real time. This platform provides a standardized tool for the development and testing of intelligent ship applications， shortens testing cycles， promotes the transition from physical ship testing to a combination of virtual and real validation， supports the implementation of smart ship technology， and aligns with international standards.