There exist complex dependencies between electric power Optical Transport Network（OTN）service risk factors and link or node failure probability and type of service path configuration.In order to determine the influence degree of different factors on the service risks

it is necessary to adopt effective methods to analyze the correlation of service risks and their influence factors.This paper first gives the service risk model and the analytical approaches and analyzes the service risks in the failure scenario of the links or nodes.Then

it defines six service risk influence indicesand analyzes the correlation between the influence indices and the service risks using the Spearman’s rank correlation coefficient method.Finally

it verifies the feasibility of risk analysis and correlation analysis algorithmin practical cases.The research conclusions have certain reference value to OTN service risk assessment and service path optimized configuration.