Abstract: A prediction management system that makes a prediction regarding a material, includes: a descriptor storage unit that stores descriptors each describing a parameter regarding processing means, a structure, a property, or a performance of the material; a prediction model storage unit that stores prediction models each describing an input and output relationship among the descriptors, wherein each prediction model accepts, as an input, one of at least two of the processing means, the structure, the property, and the performance, and outputs another one thereof; a workflow storage unit that stores workflows each describing that at least two of the prediction models are connected to each other via the descriptor, wherein an output of one prediction model is accepted as an input of another prediction model; an execution unit that gives an input to each of the workflows, executes the workflow, and stores an execution result including an output result of each prediction model included in the workflow; and a processi