An apparatus and method for executing a digital twin is provided. The apparatus includes a generation module configured to generate first to Nth digital twin Docker images by combining first to Nth digital twin models, where assets are virtualized, and first to Nth Docker images, respectively, wherein each of the digital twin Docker images includes the corresponding digital twin model and a file required for executing the corresponding digital twin model (N being a natural number greater than 1), an authoring module configured to author a digital twin workflow by connecting the first to Nth digital twin Docker images, a scheduling module configured to select a target digital twin Docker image to be currently executed from the digital twin workflow, and schedule execution of the selected target digital twin Docker image, and an execution module configured to execute the target digital twin Docker image according to the scheduling result.