The basic ways of missile launch are tilted thermal emission, vertical thermal emission and vertical cold emission at home and a-broad at present and in near future. The disadvantages of this emission ways are long reaction time, low quality-value ratio, easily exposed goal, etc. To meet the needs of prevent future wars, the electromagnetic coil vertical launcher for ship-borne missile was introduced. The fundamental constitution and working principle were stated. Physical and mathematical model of the working process was established. Pa-rameters design flow was analyzed and scheme design was proposed. The structure and circuit parameters of the electromagnetic coil vertical launcher for ship-borne missile were calculated according to the launch requirement of the ship-borne missile.