A model experiment is an effective method to investigate the working characteristics of electromagnetic coil launcher (EMCL). Results from the model experiment are applied to the prototype study of EMCL, after the scaling relations of physical quantities between model and prototype are determined. A new type of EMCL is designed, and the scaling factor relations of the physical quantities between model and prototype of the EMCL are deduced based on its mathematical model and similarity theory. The scaling model is investigated by simulation. It is shown that the scaling factor relations of the physical quantities are expressed as length-scaling factor, and the scaling model is feasible.