Oh, I know the reason why. Because my photoshop open image with Camera Raw first before open in Photoshop workspace, and it was using Adobe RGB color profile.
When I choose sRGB, it's normal now.
Thank you c.pfaffenbichler.
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You've already found the answer but just in way of an explanation.
The numbers associated with a colour (be they RGB or CMYK) are meaningless without a colour profile. So the same colour can have have different numbers if the profile is different. Don't get fooled by the Hex number that is also just a number which uses base 16 i.e. 00 to FF instead of base 10 i.e. 0 to 255. It is also meaningless without a profile.