Bencho Yordanov Obreshkov was born on April 27, 1899 in Karnobat.

From 1918 to 1920, he studied at the Art Industrial School, Sofia, where his teachers were Petko Klisurov and Ivan Angelov. In 1926, he graduated from the Art Academy in Dresden in the class of Professor Oskar Kokoschka and Otto Dix. He specialized in sculpture in the class of the famous Antoine Bourdelli, participated in exhibitions in Paris in the period 1925–1927. He returned to Bulgaria in 1927.

Bencho Obreshkov works in the field of portrait, landscape and still life, he paints scenes from the life of fishermen and sailors. Characteristic of his portraits is the masterly rendering of the physiognomic and psychological characteristics of the models. His landscapes are almost always populated with human figures. The preferred technique is oil paints.

Obreshkov organized his first solo exhibition in Karnobat in 1919, with a charitable purpose. He held over ten solo exhibitions: in Sofia, Dresden, Athens, Bucharest and a joint one with Zlatyu Boyadzhiev and Georgi Baev in 1962 in Sofia. Participated in collective exhibitions in Belgrade, Paris, Munich, Moscow. Obreshkov's canvases are in the possession of NHH, SGHH, the art gallery in Burgas and other cities, galleries in Stockholm, Prague, Vienna, Dresden, Bucharest, Athens and private collections at home and abroad. During the bombing of Sofia in 1944, more than 250 of his paintings were destroyed.

Bencho Obreshkov is a member of the Society "Native Art" and the "Society of New Artists". Between 1969 and 1970 he was the chairman of the Creative Fund of the SBH. He is the recipient of numerous awards, including the "Eren Zoignis" prize (1926, Dresden), "Grand Prix" (1937, Paris), "Phoenix" prize (1938, Athens), BAS prize for art (1938), "Order for Art" (1938, Bucharest), 1st prize for painting from the "Sofia" competition (1967), order "Cyril and Methodius" - II degree (1963) and "People's Republic of Bulgaria" - II degree (1969). In 1966, he received the title of Honored Artist.
Bencho Obreshkov died on April 8, 1970 in Sofia.