合同附随义务旨在保护合同履行过程中的固有利益。合同附随义务在适用上有区分的必要,应该做狭义和广义之分。在具体的案例中,合同的目的、交易习惯和合同合理预期制约着合同附随义务的适用范围。在司法实践中应更明确地界定附随义务的范围。反对合同附随义务的道德化倾向,而且应该通过侵权法上的危险责任原则,结合合同附随义务来把握民法上诚实信用原则的适用的尺度。 The contractual obligation to contract is intended to protect the inherent interest in the performance of the contract. The contract accompanying obligations in the application of the need for distinction should be narrow and broad sense. In specific cases, the purpose of the contract, the transaction habits and the reasonable expectation of the contract restrict the applicable scope of the contract-accompanying obligations. In judicial practice, the scope of the accompanying obligations should be more clearly defined. Oppose the moral tendencies of contractual obligations, and should adopt the applicable principle of the principle of good faith in civil law through the principle of dangerous liability in tort law and the contractual obligations.