Path-specific effect analysis is a powerful tool in causal inference.This paper provides a definition of causal counterfactual path-specific importance score for the structural causal model (SCM).Different from existing path-specific Face Massage Tool effect definitions, which focus on the population level, the score defined in this paper can quantify the impact of a decision variable on an outcome variable along a specific pathway at the individual level.Moreover, the score has many desirable properties, including Volleyball - Clothing - Tops following the chain rule and being consistent.Finally, this paper presents an algorithm that can leverage these properties and find the k-most important paths with the highest importance scores in a causal graph effectively.