公立医院的公益属性主要体现在向人们提供公平可及、高效优质的基本医疗服务。但是，由于对公立医院医疗服务活动的正外部性的重要性和负外部性的危害性认识不足导致了公立医院公益性淡化。同时，医疗服务活动中的交易成本、产权不明引发的外部效应进一步加剧公益性淡化。政府应采取有效措施保障和激励正外部性，阻止和控制负外部性，并且通过降低交易成本、明确产权的途径解决外部效应，尽可能保障公立医院的公益性。%Public hospital's public property is mainly reflected in providing people with equitable access, quality and efficiency of basic medical services. However, due to lack of understanding in importance of the medical services positive and negative externalities, lead to the dilution of commonweal of public hospital. Meanwhile, externalities caused by transaction costs and unclear property rights in medical services activities further exacerbate welfare fade. The government should take effective measures to protect and encourage positive externalities, prevent and control the negative externali-ties, and, by way of reducing transaction costs, clear property rights to resolve external effects, as far as possible to pro-tect the public interest in public hospitals.
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