如下所示：

plt.subplots_adjust(left=None,bottom=None,right=None,top=None,wspace=0.15,hspace=0.15)

图与图之间的间距调整

wspace=0.15,hspace=0.15

补充：python如何调整subplot的间距

https://matplotlib.org/api/_as_gen/matplotlib.pyplot.subplots_adjust.html

plt.subplots_adjust(left=None, bottom=None, right=None, top=None,
                wspace=None, hspace=None)

left  = 0.125  # the left side of the subplots of the figure
right = 0.9    # the right side of the subplots of the figure
bottom = 0.1   # the bottom of the subplots of the figure
top = 0.9      # the top of the subplots of the figure
wspace = 0.2   # the amount of width reserved for blank space between subplots,
               # expressed as a fraction of the average axis width
hspace = 0.2   # the amount of height reserved for white space between subplots,
               # expressed as a fraction of the average axis height