The medical error begins to be estimated by mortality and morbidity meetings (MMM). They concern all the medical professions among which the midwives. One of the themes of the congress of APERIF networks in 2013 concerned the evaluation of the medical errors of the midwives. We sounded the midwives of the network to know the type of medical errors, their frequencies, their consequences and the proposed corrective measures. A workgroup was set up who allowed to establish a questionnaire of evaluation which was diffused to midwives of the maternities of the network. The questionnaire analysed the population and the existing organizations in the departments regarding staff and MMM. The questionnaire also analyzed the type of committed errors, their mode of revelation, the medical and psychological consequences. The last part of the questionnaire concerned the effective corrective measures and those wished by the midwives. The rate of answer in spite of brakes to the distribution of questionnaires was satisfactory for this type of behavioural research. We noticed that the errors are very frequent and that they have an important impact in the professional life of the midwives. The MMM is little known by midwives and they are badly informed about their existence. The medical error is inevitable, it has important consequences which are underestimated and consequently without real targeted corrective measures.