Thanks for your help.
I have tried to show the image by the code below.
image0 = fake[0]

plt.imshow(np.transpose(image0,(1,2,0))) 
plt.show()

It shows a image with the warning

Clipping input data to the valid range for imshow with RGB data ([0…1] for floats or [0…255] for integers).

and the image doesn’t seems like the correct image. Most value of the tensor are negative value. Did I do any thing wrong?