Based on the minimum exhaust accident research about making sure the ammonia concentration is un-der IDLH( immediately dangerous to life or health concentration) when the refrigeration station’s ammonia compressoris leaking by putting the equipment onto different places． At the same time，it discussed the wind path’s best heightand quantity of into- wind，on the refrigeration machine，to safe the staff working inside． Built up a refrigeration sta-tion’s ammonia compressor leaking model by the way of Fluent numerical simulation． It tells the method of putting re-frigeration station’s equipment and the quantity of exhausting air accident by dealing with data information． The resultis that the Refrigeration equipment should be put in the middle of the Station，the down- edge of the wind path s into-wind should keep within 1 to 1. 5 m and no more than 2. 5 m． It also provides evident for installing of refrigeration sta-tion s machine，selecting accident exhaust fan and the height of into- wind machine’s install．