This research paper entitled "Response of yield and components of the architecture of the bean plant (Phaseolus vulgaris L.) According to plant density", had as objectives: To study the response of yield and components of plant architecture according to the density and determine the economic analysis of the treatments. Was conducted between February and May 2012 in the Fundo Miraflores de la Universidad Nacional de San Martin - Tarapoto. Design We used a randomized complete block with a factorial arrangement of 2 x 5, with 3 blocks and 10 treatments. Being the Factor A = bean varieties (Panamito red and brown) and Factor B = Seeding (b1 = 15 cm x 60 cm, b2 = 20 cm x 60 cm, b3 = 25 cm x 60 cm, b4 = 30 cm x 60 cm and b5 = 35 cm x 60 cm). The variables evaluated were: Percentage of emergency, lateral branches per plant, nodes per lateral branch, Knots on main stem nodes per square meter, le...