依据我国合同法的规定,当事人除应履行合同约定的义务以外,还应承担依据合同的性质、目的和交易习惯发生各种附随义务。附随义务形成的理论基础源于民法中的诚实信用原则,其内容主要包括通知义务、协助义务和保密义务。当事人违反履行中的附随义务应当承担采取补救措施、解除合同、赔偿损失的法律后果。 According to the provisions of the Contract Law of our country, the parties should, in addition to fulfilling the obligations stipulated in the contract, also bear various accompanying obligations according to the nature of the contract, its purpose and its trading habits. The theoretical basis for the formation of the accompanying obligation stems from the principle of good faith in civil law, which mainly includes the obligation of notification, the obligation of assistance and the duty of confidentiality. Any party that violates the accompanying obligations in performance shall bear the legal consequences of taking remedial measures, dissolving the contract, and compensating for the losses.