#font = ImageFont.truetype("C:/Windows/Fonts/simsunb.ttf", 20)
font = ImageFont.truetype('simsun.ttc',24)
im = Image.open('F:\one'+time+'.jpg')
draw = ImageDraw.Draw(im)
text = unicode('你好','utf-8')
draw.text((20,20), text, font=font, fill=(0,0,0,0))
im.save('F:/'+time+'.jpg')
PIL 和 pycairo (cairo)都可以做。