Abstract: Magmatic sulphide deposit was rich in nickel,copper and other base metals elements,partly full with Platinum Group Elements(PGE).This kind of deposit account for 60% of the world`s nickel production,and also one of the most active exploration target in the mineral market.The Sudbury basin in Ontario is a world-class magmatic nickel sulphide camp,following first discovery,dozens of mines were putting into production on the surround boundary of Sudbury.According to the predecessors` comprehensive research,Sudbury basin was considerate as origin from outer space meteorolite impact.Clear exogene processes is help for researching clear meaning of magmatic sulphide deposit origin.The brief summary of Sudbury nickel sulphide deposit was:The outer space impact fractured the earth`s crust,the deep fractures themselves arouse and influence the magmatic exhalation,lead to the magma reacting after mixture with the upper sedimentary bedding.On the contact surface,the dense metal-rich immiscible liquid including nickel,copper etc.accumulation rapidly.Finally,it formed to magmatic sulphide deposit with different form,size and grade,by the affection of tectonic deformation.