Due to the art of negligence caused the animation slot error disable/enable and slot deformation error, in this case, you can simply modify the animation json re-import to get the correct effect.
Situation --- wrongly disabled/enabled slots:
- find the node of animation clip in json file, in my case it was "animations/fengmian".
- if need disable a slot, just add the corresponding slot with the name of "null" attachment at the right time.
- on the contrary, give the attachment a right name just like "left_01".
- reimport the spine animation folder in Unity.
Situation --- wrongly shape of slot:
- find the slot defination node under "skin" node.
- edit the values of vertices,
"vertices": [321.68, 254.51, 327.09, -136.44, -80.25, 247.03, -74.84, -143.92, 256.43, 0.82, 37.6, -7.7],