A local air cleaning apparatus comprising: a push hood comprising an air flow opening face for blowing out a cleaned uniform air flow; a guide , having a length b, provided on a side of the push hood comprising the air flow opening face , the guide extending from the side thereof comprising the air flow opening face toward a downstream side of the uniform air flow to form an opening face at a downstream-side end portion of the guide ; and an air collision surface (W) that is opposed to the air flow opening face , wherein the push hood is arranged such that the cleaned uniform air flow blown out from the air flow opening face passes through the inside of the guide and then collides with the air collision face (W) on a downstream side of the opening face of the guide ; the opening face of the guide is spaced apart from and opposed to the air collision face (W) to form an open region between the opening face of the guide and the air collision face (W); the local air cleaning apparatus being characterized in that the cleaned uniform air flow blown out from the air flow opening face collides with the air collision face (W) to flow out of the open region so as to cause the inside of the guide and the inside of the open region to be a work region having higher cleanliness, for an operator, than other regions; and the guide is configured to increase the work region while maintaining the higher cleanliness within the work region by enabling a distance X between the air flow opening face and the air collision face (W) with having the guide to be greater than a distance therebetween without having the guide between the air flow opening face and the air collision face (W), wherein the length b is set to a predetermined length according to the distance X. a push hood comprising an air flow opening face for blowing out a cleaned uniform air flow; a guide , having a length b, provided on a side of the push hood comprising the air flow opening face , the guide extending from the side thereof comprising the air flow opening face toward a downstream side of the uniform air flow to form an opening face at a downstream-side end portion of the guide ; and an air collision surface (W) that is opposed to the air flow opening face , wherein the push hood is arranged such that the cleaned uniform air flow blown out from the air flow opening face passes through the inside of the guide and then collides with the air collision face (W) on a downstream side of the opening face of the guide ; the opening face of the guide is spaced apart from and opposed to the air collision face (W) to form an open region between the opening face of the guide and the air collision face (W); the local air cleaning apparatus being characterized in that the cleaned uniform air flow blown out from the air flow opening face collides with the air collision face (W) to flow out of the open region so as to cause the inside of the guide and the inside of the open region to be a work region having higher cleanliness, for an operator, than other regions; and the guide is configured to increase the work region while maintaining the higher cleanliness within the work region by enabling a distance X between the air flow opening face and the air collision face (W) with having the guide to be greater than a distance therebetween without having the guide between the air flow opening face and the air collision face (W), wherein the length b is set to a predetermined length according to the distance X. <EOS>