Provided is a method of tracing a common cause failure in an integrated drawing. The method includes: synthesizing entities assigned attributes in at least one design drawing in units of a system where a common cause is to be traced; generating an integrated drawing with a hierarchical structure by horizontally or vertically interconnecting the entities assigned the same attribute in the at least one design drawing; and displaying a fault propagation path in the integrated drawing by using an internal tracer, wherein the displaying illustrates state information of the entities on the fault propagation path.