Under the influence of the new crown pneumonia epidemic, the losses of various types of enterprises in China are huge. The epidemic has brought heavy pressure on enterprises, and the cessation of capital turnover, the rupture of capital chain, and the shutdown of cooperative enterprises have worsened the operation of enterprises. With the improvement of the domestic epidemic situation, enterprises are moving towards rework and reproduction, and the current research is mainly based on the analysis of enterprise status, such as the evaluation of enterprise vulnerability and the evaluation of enterprise loss. There is no discussion on the model of enterprise recovery process. Based on this, this paper uses the Cox survival analysis model to construct the recovery process model of enterprises under public health emergencies based on the damaged enterprises under the new crown epidemic, and evaluates the factors affecting the recovery of enterprises. At the same time, compared with different types of enterprises, the impact of risk factors on industry differences is pointed out. The results show that compared with the enterprise' s own factors, the regional economic loss rate is a key factor affecting the recovery of enterprises. For different types of enterprises, in addition to economic loss rate, factors such as regional average net population inflow have also become important factors for the extension of recovery period. Based on the above conclusions, this paper predicts the recovery time of different types of enterprises under different economic loss rates. Predict the recovery process of different types of enterprises under public health emergencies; On the other hand, provide effective policy recommendations for enterprise emergency management.

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