Thesars-cov-2isanenvelopedβ-coronavirus, circularorellipticalparticledeteterofabout60 ~ 140nm, mara nyingiomorphic, wazidifferentfromsars-covandmers-covingeneticcharacteristics.themainclinicalmanifestationincludefever, fatigueanothesnysnomesnosnomsoeanothesnysnocysnocysnocysnocysnocysnommaeandotherns, e.matigueandothes Canrapidlydeveloposeverepneumonia, kupumua, acuterespiratorydistresssyndrome, septicshock, organfailure, severeacid-basemetabolismdisorder, andevenlife-kutishia .SARS-CoV-2hasbeenidentifiedasthemainmeansoftransmissionthroughrespiratorydroplets(sneezing,coughing,etc.)andcontact(pickingnostrilwiththehandincontactwiththevirus,rubbingeyes,etc.).SARS-CoV-2issensitivetoultravioletrayandheat,andcanbeinactivatedat56℃for30minutesandbyfatsolublesolventsuchasethylether,75%ethanol,chlorinedisinfectant,peraceticacidandchloroform.