import matplotlib.pyplot as plt import numpy as np from matplotlib.ticker import MultipleLocator, FormatStrFormatter sin_num = 2 x = np . linspace( 0 , 50 , 150 ) y_ok = np . sin(x / sin_num) * 3 + 6 y1 = y_ok[ : 120 ] y2 = y_ok[ : 120 ] x_1 = x[ : 120 ] #x2 = np.linspace(0, 30, 120) fig, axes = plt . subplots() fig . set_size_inches( 10 , 5 ) axes . set_xlabel( 'before' ) axes . set_ylabel( 'glucose' ) axes . plot(x_1, y1, color = 'green' , label = 'before' ) axes . plot(x_1 / 0.8 , y2, color = 'red' , label = 'after' ) axes . set_xticks([ 0 , 5 , 10 , 15 , 20 , 25 , 30 , 35 , 40 , 45 , 50 ], [ '0:00' , '1:00' , '2:00' , '3:00' , '4:00' , '5:00' , '6:00' , '7:00' , '8:00' , '9:00' , '10:00' ], color = 'green' ) axes . legend() xmajorLocator = MultipleLocator( 5 ) #xmajorFormatter = FormatStrFormatter axes . xaxis . set_major_locator(xmajorLocator) axes . xaxis . grid( True , which = 'major' , linestyle = "dashed" , color = "darkgreen" , linewidth = 0.75 ) x1, x2 = axes . get_xlim() twin_axes = axes . twiny() twin_axes . set_xlabel( 'after' ) twin_axes . set_xlim(x1, x2) twin_axes . set_xticks([ 0 , 5 , 10 , 15 , 20 , 25 , 30 , 35 , 40 , 45 , 50 ], [ '0:00' , '1:00' , '2:00' , '3:00' , '4:00' , '5:00' , '6:00' , '7:00' , '8:00' , '9:00' , '10:00' ], color = 'red' ) twin_xml = MultipleLocator( 5 ) twin_axes . xaxis . set_major_locator(twin_xml) twin_axes . xaxis . grid( True , which = 'major' , linestyle = "dotted" , color = "darkred" , linewidth = 0.75 ) fig . suptitle( "C2" ) plt . show()

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相信我，这篇文章一定能让你的matplotlib正确显示中文。