This thesis aimed to study analysis of local and imported bulb onion variety accessions. There were total 34 variety accessions studied, 2 local variety from Vegetable Scientific-Research Institute and 32 imported varieties. 34 sortname and country of origin: Local (Sabir and Hovsan); Turkey (Barakat, Mor Soghan, Beyaz soghan, Tekirdagh soghan, Casta, Beta Panko, Red Amposta, Betaki, Panko, Metan, Erkenci, Valenciana); Uzbekistan (Karatalskiy); Tajikistan (Peshpazak, Ispanskiy mestnıy, Mayskiy, Hissor); Ukraine (Khalchedon); America (Walla walla, Gırmızı bash soghan, Primero); The Netherlands (Red Baron, Shalot, Stardast, Rocardo); Spain (Sweet spanish yellow, Ispanyol beyaz soghan, Delfos); İtaly (Sarı Parma soghan, Lilia); Great Britain (Brown Pickling); India (Poona Red). Onion is the second vegetable plant after tomato in the world. In spite of its use as food and economic value, genetic research of onion is behind than other plants. Onion is considered a biennial plant of the family of Liliaceae and is one of the important vegetable plants in the world of about 55 million tons. 72 of the onion varieties are spread in the Caucasus. In the flora of Azerbaijan there are 52 onions varieties. The bulb onion is well-known in Central Asia, Iran, Pakistan, Afghanistan and India 4,000 years ago. The study was conducted on the local and imported varieties of bulbs. There were total 34 onion variety studied, 2 locals (Sabir and Hovsan) onion variety accessions for experiments have been collected from the Vegetable Scientific-Research Institute; imported bulb variety accessions from different countries. The practice was held in Absheron – in an open environment. Sowing of local and imported varieties of bulbs was on 25.02.2017. The lower dry matter in Sweet Spanish yellow (6,2%) and the highest dry matter in Poona Red (12,4%) in 2017. The lower nitrate was in Mor soghan (62 mg / kg) and the highest nitrate in Red Amposta (95,3 mg / kg) in 2017. Sugar content was measured the highest in Valenciana (9.71%) and Casta (9.71%) in 2017. The lowest sugar content was Red Amposta in 2017 (6.44%). On the other hand, vitamin C was predominant in Casta (9.37mg%) in 2017. Lower vitamin C content was found in Mor Soghan (6.50mq%) in 2017.