我使用的方法：

# coding=utf-8
from matplotlib.font_manager import FontProperties
font = FontProperties(fname='/ly/simsun.ttc', size=14)

其中simsun.ttc需要另行下載

程式碼段：

# coding=utf-8
from matplotlib.font_manager import FontProperties
import pylab as pl

font = FontProperties(fname='/ly/simsun.ttc', size=14
 
)

x1 = [64, 128, 256, 512, 1024]
y1 = [28416, 39612, 39744, 39839, 39894]

pl.plot(x1, y1, 'b', linewidth=3, marker='o')

pl.title(u'不同資料包大小實驗', fontproperties=font)
pl.xlabel('pkt-size(B)')
pl.ylabel('throughput(Mb/s)')

for i in range(len(x1)):
    pl.text(x1[i],y1[i],[x1[i],y1[i]])

pl.ylim(28000.0, 42000.0
 
)
pl.show()