Greenhouse summer squash is a major type of greenhouse vegetable in Shandong Province. In summer, there is a three-month idle period of greenhouse summer squash. Volvariella volvacea is a high temperature resistant high-quality edible fungus. In practice, it is able to use the spent mushroom substrate of Flammulina velutipes to cultivate V. volvacea. In the idle period of greenhouse summer squash, cultivating V. volvacea using the spent mushroom substrate of F. velutipes has high economic and environmental benefits. The cultivation techniques mainly include the preparation of cultivation materials, preliminary preparation for the greenhouse, planting management of V. volvacea, and returning the spent mushroom substrate to the field. By comparison with the conventional summer squash planting, this technique has higher economic benefits and its application prospects will be broad.