Based on the geometrical design of a new invented gear system called quadruple-arc gear
an overall analysis of meshing properties is presented.The following is given(1) axial distance of four simultaneous meshing points of quadruple-arc gear;(2) mesh factor;(3) general formulation of the mesh factor;(4) algorithm of proper tooth width;(5) a table for the calculation of the above information.This work is definitely useful to application of the new gear design.