The invention discloses an MVCT 
image texture enhancement method based on double regular constraints, and mainly solves the problem that MVCT 
image enhancement cannot be carried out in the prior art.According to the scheme, the method comprises the following steps: 1) acquiring a plurality of KVCT and MVCT images from the same part of a 
human body; 2) normalizing the obtained CT image 
data set, and taking blocks from each pair of CT images to obtain a CT image block 
data set; 3) establishing a 13-layer MVCT 
image texture enhancement network, using the CT image block 
data set as training data,and optimizing the network by using a 
gradient descent algorithm to obtain a trained network; and 4) inputting a complete MVCT image into the trained network, and outputting the enhanced MVCT image.According to the invention, while the 
image texture is enhanced, the edge and details of the image can be well maintained, the 
image quality is improved, a doctor can conveniently read and diagnose the MVCT image, the focus 
position error is corrected, and the radiotherapy accuracy is ensured.