The present invention provides a pet shield comprising: a cover having a transparent visible area, the head cover having a head receiving space therein, the head receiving space having an opening connected to the outside； a filter net, Attached to the opening position of the hood, the filter screen has a mesh body and a nanofiber film layer adjacent to the inner and outer surfaces of the mesh, and the nanofiber film layer has a plurality of pores； A filter medium between pets and the outside air, which can effectively block infectious diseases and dust (such as PM2.5) to reduce the chance of pets getting sick.本創作係在提供一種寵物防護罩，包含有：一頭罩，具有透明之可視區域，該頭罩內部具有一頭部容納空間，該頭部容納空間具有一連通至外界之開口；一過濾網，係連接於該頭罩之開口位置處，該過濾網具有一網體及一臨接在該網體內外表面之奈米纖維薄膜層，奈米纖維薄膜層具有複數孔隙；藉由該過濾網作為寵物與外界空氣間的過濾媒介，而可有效地阻隔傳染病源及粉塵(如PM2.5)，以減少寵物生病的機率。
