diff --git a/csst_ifs_gehong/spec1d.py b/csst_ifs_gehong/spec1d.py
index c91ae5bb4f0bc9eba4ad9c5bdc559facfa90546e..bcb7f07578f7c06731b95922027505a51ee3d103 100644
--- a/csst_ifs_gehong/spec1d.py
+++ b/csst_ifs_gehong/spec1d.py
@@ -8,7 +8,7 @@ from astropy.io import fits
 from scipy.stats import norm
 from scipy.interpolate import interp1d
 
-data_path = os.getcwd()
+data_path = os.path.dirname(os.path.abspath(__file__))
 
 def readcol(filename, **kwargs):
     """