hmmm,if fxaa can run with enbseries injector version why i can't toggle it in-game by pressing PAUSE button if i using the preset files,because the author said it can be toggle in-game,maybe i should check it again by using your original files plus add fxaa injector

If you can't run, then it's not initialized in proxy category of enbseries.ini or by unknown reason don't want to load at all. Check other users presets as example how to run other d3d9 based mods.

_________________
i5-4690k, 16Gb RAM, GTX 1060 6Gb, X-Fi Titanium, Win7 x128
I am INFP, not the brutal, godamnit.

i've set the EnableProxyLibrary to true and also InitProxyFunctions, proxy library has been set to d3d9_fxaa.dll but it's not working for fxaa,but if i use smaa it can work,sweetfx work too(i've compared my screen to the author that use smaa or sweetfx)

Have you tried wrapper version, is it work? The only guess is the key used by enbseries and other d3d9 mod, then change keys in [INPUT] category of enbseries.ini (any, just for experiment).

_________________
i5-4690k, 16Gb RAM, GTX 1060 6Gb, X-Fi Titanium, Win7 x128
I am INFP, not the brutal, godamnit.

i've trey the wrapper version but it kill my fps,and when i use the wrapper version my screen is flashing,about the input key i'm not sure i understand with these line
[INPUT]
//back
KeyReadConfig=8
//shift
KeyCombination=16
//f12
KeyUseEffect=123
//home
KeyFPSLimit=36
//num / 106
KeyShowFPS=106
//insert
KeyScreenshot=45

So with wrapper version key work? Then i don't know solution. As for keys, just set them all (temporary) to 45 for example and try to press key from fxaa injector:
[INPUT]
//back
KeyReadConfig=45
//shift
KeyCombination=45
//f12
KeyUseEffect=45
//home
KeyFPSLimit=45
//num / 106
KeyShowFPS=45
//insert
KeyScreenshot=

_________________
i5-4690k, 16Gb RAM, GTX 1060 6Gb, X-Fi Titanium, Win7 x128
I am INFP, not the brutal, godamnit.