The embodiment of the invention provides a hardware resource allocation method and device, relates to the technical field of computers, and can improve the allocation speed of hardware resources and the utilization rate of the hardware resources. The method comprises the following steps: receiving a hardware resource allocation request; Determining parameter information of the n tasks to be distributed according to the hardware resource distribution request; Respectively converting the n tasks to be distributed into cuboid blocks in a preset three-dimensional space model; Adjusting the positions of the n cuboid blocks in a preset three-dimensional space model, and selecting a position capable of reserving an idle space with the lowest fragmentation degree in the preset three-dimensional space model to place the n cuboid blocks; And determining a first parameter and a second parameter of the hardware resources allocated to the n tasks to be allocated and the time for allocating the hardware resources to the n tasks to be allocated according to the parameters of the n cuboid blocks in the three dimensions in the preset three-dimensional space model. The method is applied to hardwareresource allocation.