Anatomical basis and method of selective angiography of the bronchial arteries are described. Selective vascular angiograms of different lung diseases are different in appearance but are not always specific. Bronchial-arteriograms of the following diseases are demonstrated: tumors, inflammations, bronchiectasis, cystic lungs diseases and angiomatous changes of the vessel. Key features common to all investigated cases are: 1. Increased flow with dilatation of the afferent bronchial artery. 2. Bronchialangiography is more effective in defining the extensions of the hypervascularized lung diseases than other conventional diagnostic methods. 3. In all our cases we have observed arterial bronchopulmonary anastomoses which seem to be a significant cause for hemoptysis occurring during the course of the disease.