To provide an analyzing method for spectacle lens that easily analyzes a passing position and an inset position of a corridor axis of a spectacle lens, a processing method for processing, and an analyzing program.

A light beam is emitted from one lens surface to the other lens surface of a spectacle lens manufactured based upon a prescription characteristic of a wearer, displacement of each light beam due to refraction is mapped to acquire refracting power data on each mapping point. An expression is applied to C-diopter data and astigmatic axis data of refracting power data on a straight line in a direction crossing a main sight line, and a function obtained from relation between a position on the straight line and a value obtained by application to the expression is subjected to second order differentiation to analyze the position of the main sight line.