diff --git a/SpecGen/SpecGenerator.py b/SpecGen/SpecGenerator.py
index 6342053b911f90ab84f749bada5891875094922a..d9e85e86f7d32b8b268857b15807f01bb6447356 100644
--- a/SpecGen/SpecGenerator.py
+++ b/SpecGen/SpecGenerator.py
@@ -185,13 +185,15 @@ class SpecGenerator(object):
         Aimg_cal = Aimg_[y_cent_pos-y_range:y_cent_pos+y_range+1, specRangeImg]
         ids = Aimg_cal > self.saturation
 
-        #1. saturation pixel number, 2. total pixel number, 3 saturation ratio, 4.flux ratio in photo aperture
-        saturePix = [0,0,0, 0]
+        #1. saturation pixel number, 2. total pixel number, 3 saturation ratio, 4.flux ratio in photo aperture,5.max value,6.min value
+        saturePix = np.zeros(6)
 
         saturePix[0] = Aimg_cal[ids].shape[0]
         saturePix[1] = Aimg_cal.shape[0]*Aimg_cal.shape[1]
         saturePix[2] = saturePix[0]/saturePix[1]
         saturePix[3] = fluxRatio
+        saturePix[4] = np.amax(Aimg_cal)
+        saturePix[5] = np.amin(Aimg_cal)
         
         idx = (wave_pix >= bRange[0]-100)
         idx1 = (wave_pix[idx] <= bRange[1]+100)
@@ -308,13 +310,15 @@ class SpecGenerator(object):
         Aimg_cal = Aimg_[y_cent_pos-y_range:y_cent_pos+y_range+1, specRangeImg]
         ids = Aimg_cal > self.saturation
         
-        #1. saturation pixel number, 2. total pixel number, 3 saturation ratio, 4.flux ratio in photo aperture
-        saturePix = [0,0,0,0]
+        #1. saturation pixel number, 2. total pixel number, 3 saturation ratio, 4.flux ratio in photo aperture,5.max value,6.min value
+        saturePix = np.zeros(6)
 
         saturePix[0] = Aimg_cal[ids].shape[0]
         saturePix[1] = Aimg_cal.shape[0]*Aimg_cal.shape[1]
         saturePix[2] = saturePix[0]/saturePix[1]
         saturePix[3] = fluxRatio
+        saturePix[4] = np.amax(Aimg_cal)
+        saturePix[5] = np.amin(Aimg_cal)
         
         idx = (wave_pix >= bRange[0]-100)
         idx1 = (wave_pix[idx] <= bRange[1]+100)
diff --git a/SpecWindow/specWin.py b/SpecWindow/specWin.py
index d9aa5ce90e592a713c539509501e3bbf9f99f359..659e96cae3ba04efed61b488a5945f4aa0320d91 100644
--- a/SpecWindow/specWin.py
+++ b/SpecWindow/specWin.py
@@ -423,7 +423,7 @@ class Example(QMainWindow):
             g_q = float(self.gqText.text())
             specTab, specImg, img, sutPix=specG.generateSpec1dforGal(s_n = g_sn, re = g_re, pa = g_pa,q_ell = g_q,limitfluxratio=0.8)
 
-        self.outinfo.setText('saturation: 90000 e- , saturation pixel number: %d, total pixel number: %d, saturation ratio: %f'%(sutPix[0],sutPix[1],sutPix[2]))
+        self.outinfo.setText('saturation: 90000 e- , saturation pixel number: %d, total pixel number: %d, saturation ratio: %f, pixel value maximun: %d e-, pixel value minimum: %d e-'%(sutPix[0],sutPix[1],sutPix[2],sutPix[4],sutPix[5]))
         # self.outinfo.adjustSize()
         spec_orig = np.loadtxt(sedFn)