diff --git a/csst_mci_sim/csst_mci_sim.py b/csst_mci_sim/csst_mci_sim.py
index 9ca2d6c5191ecedc8240d315750bc9225ba85707..83396f5c323e8ae344dcff77440335090ca7205e 100644
--- a/csst_mci_sim/csst_mci_sim.py
+++ b/csst_mci_sim/csst_mci_sim.py
@@ -2151,7 +2151,7 @@ class MCIsimulator():
                 t.toMag(redshift=redshift)
                 # Calculating flux
                 ugriz = np.array([umag, gmag, rmag, imag, zmag])
-                star_flux = sed.Model_Galaxy_SED(wave, ugriz, redshift, t)  
+                star_flux = sed.Model_Galaxy_SED(wave, ugriz, redshift, t, self.information['dir_path']) 
                 self.log.info('load star catlog 888888888888')
                 
                 
@@ -2175,7 +2175,7 @@ class MCIsimulator():
                 t.toMag(redshift=redshift)
                 # Calculating flux
                 ugriz = np.array([umag, gmag, rmag, imag, zmag])
-                star_flux = sed.Model_Galaxy_SED(wave, ugriz, redshift, t)            
+                star_flux = sed.Model_Galaxy_SED(wave, ugriz, redshift, t, self.information['dir_path'])           
             #########################################
             self.log.info('load star catlog 99999999')
             ##cal_SED_photons(self, flux_arr):
diff --git a/csst_mci_sim/support/sed.py b/csst_mci_sim/support/sed.py
index 52169fed4bfa4b5f059f64a54cbb91edf063e498..8dc56a609e83fec4ec49d581bfb37181d27172bf 100755
--- a/csst_mci_sim/support/sed.py
+++ b/csst_mci_sim/support/sed.py
@@ -198,7 +198,7 @@ def Model_Stellar_SED(wave, bp, rp, temp):
     flux  = calibrate(wave, flux1, rp, band = 'GAIA_rp')
     return flux
 
-def Model_Galaxy_SED(wave, ugriz, z, temp):
+def Model_Galaxy_SED(wave, ugriz, z, temp, path):
     """Modelling galaxy SED based on u,g,r,i,z magnitude
 
     Args:
@@ -239,5 +239,5 @@ def Model_Galaxy_SED(wave, ugriz, z, temp):
     flux1 = reddening(temp.wave, flux0, ebv = ebv)
     
     flux2 = np.interp(wave, temp.wave * (1 + z), flux1)
-    flux  = calibrate(wave, flux2, ugriz[2], band = 'SDSS_r')
+    flux  = calibrate(wave, flux2, ugriz[2], path, band = 'SDSS_r')
     return flux
\ No newline at end of file