Method and device for generating deliverable radiotherapy plan according to three-dimensional space dose distribution

The invention provides a method for generating a deliverable radiotherapy plan according to three-dimensional space dose distribution. The method comprises the following steps of preprocessing obtained patient radiotherapy related data used for generating the deliverable radiotherapy plan, and predicting a field dose in each radiation field direction through a preset field dose prediction model; and further based on the predicted field dose, predicting a fluence map of each corresponding radiation field direction through a preset fluence map prediction model, and finally, generating a deliverable radiotherapy plan based on the predicted fluence map of each radiation field direction and radiotherapy equipment parameters, wherein the generated deliverable radiotherapy plan comprises the information of each radiation field direction and related parameters of an accelerator, so that the generated deliverable radiotherapy plan is the deliverable plan which can be executed by a radiotherapy accelerator. Since a dee