The Chinese government recently changed the size requirements for photographs used for visa applications. The new rules are specific:
- 33 mm wide and 48 mm high
- Head width of 15 – 22 mm and head height of 28 – 33 mm
- Space of 3 – 5 mm between the top of head and top of photo.
It’s explained in the government leaflet, shown below. You need to meet these dimensions or your photo will likely not be accepted.
You can also refer to China Visa Photo Requirements PDF.