Internal audit plan is the initial and core link of internal audit, its effective formulationis an important prerequisite to improve the internal audit’s quality and to ensure effectiveoperation of the internal audit work. With the gradual promotion of risk-oriented internalaudit, International Internal Audit Standards proposed new requirements for theformulation of the internal audit plan—risk-oriented development of the internal audit plan.But currently most internal audit plan in enterprise is formulating randomly, lack ofreasonable assessment methods, even ignoring the risk assessment link in planning. Theycause that the internal audit resources co figurate effectively based on the results of the riskassessment. Therefore, the integration risk assessment method applying to the formulationof the internal audit plan is very important.Firstly, this article defines the connotation of the internal audit plan, and then analysisthe situation and exiting problems based on the relational theory, finds that the internalaudit plan formulation exists several problems as followed: lack of risk managementconcept, dual planning motivation, lack of scientific and rational audit plan basis, contentsfocused on financial aspects, lack of independent department, lack of highly qualified staff.These problems have greatly restricted the effectiveness of audit planning. Focusing onthese inadequacies, this article further proposes the introduction of integrated riskassessment method to internal audit planning to innovative audit planning ideas andimprove the audit planning, and then elaborates on the specific application of this riskassessment method based on actual cases, testes the rationality of this method. Finally, thisarticle proposes several safeguards to improve the internal audit planning. Thesesafeguards include conceptual basis, institution, organization, quality of personal andtechnical approach.