True buges (Insecta: Heteroptera) are ecologicaly very different group of organisms and they play an immportant role in agricultural production. According to their feeding habitats we can clasified them in three clases; phytophagus, zoofag and omnivores. Some species can cause serious problems in grape production. True bugs also act as agents in biological control of some immportant agricultural pests. Elements of ecological infrastucture such as wildflower strips, hedges and weeds could help beneficial bugs to survive offering them prey, nectar and pollen during the growing season. Weeds can enhance the abundance and diversity of beneficial heteroptera. They also can provide support for biological control at the local and landscape level. The aim of this PhD study was to determine the influence of different types of production as well as ecological infrastructure on true bugs abundance and diversity in vineyards. The study was carried out in three vineyards (organic, extensive and integrated vineyard) in Zadar County(Croatia). The samples were collected from May to October during 2010, 2011 and 2012.The true bugs were collected using a standardised sweep net method every fifteen days.For each sample 50 sweeps were made. In each vineyard three zones 3m, 10m and 50m from the edge of the vineyard. True bugs in vineyard were collected by branch shaking.Visual inspection of plants was also performed to One way ANOVA (Tukey's test) was performed to ascertain differences among bug abundance and number of species.Correspondence analysis (CA) was used to ordinate the zones of research at each site onthe basis of the abundance of true bugs species. Biodiversity among sites and zones was compared using biodiversity indices (Shannon-Wiener Index, Simpson Index, Pilou Index and Sörenson Index). During this research 4185 specimens belonging to 14 families and 58 species were found. The highest number of species was found in integrated vineyard Baštica (48), where as the lowest number was recorded in ecological vineyard Posedarje (32). Significant differences were found between number of species (One Way ANOVA) (df=2, F=5,469, p<0,05). Signifficant difference was also found between number of specimens among zones of research (df=7, F=3,269; p<0,05). The highest number of species was recorded in Baštica (A). In locality Baštica 406 specimens were recorded,until in Posedarje 353 specimens were collected. Among number of individuals statistical differences were not found. In ecological vineyard 1065 specimens belonging to 11 families and 32 species were collected. Eudominant species was Macrotylus atricapillus(58.02%). In Baštica 1105 specimens belonging to 14 families and 48 species were found.Eudominant species was Nysius graminicola (35.29%). In Dolac (extensive vineyard) 1218 specimens belonging to 14 families and 44 specimens were found. Eudominantspecies in this vineyard were also Nysius graminicola (43.18%) as well as Macrotylusatricapillus (13.5%). Relationship (Spearman Rank Correlation) between number of phytophagous speciec in ecological infractructure and vineyard was not found. Accordingto Spearman Rank Correlation there was significant strong correlation (r=0,743) among the number of plants from families Apiaceae and Asteraceae and number of predatory bugs. We could confirm the asertion that plants from these families attract beneficial bugs.Significant correlation between the number of harmful and beneficial heteroptera in ecological infrastructure was not found (r=0,201). Signifficant differences were found among beneficial bugs in ecological infrastructure (df=2, F=8,538; p<0,05). Ecological infrastrucutre of extensive vineyard showed the highest number (7) of beneficial species. According to Shannon-Wiener Index integrated vineyard showed the highest value (2.66).We found very high number of phytophagus heteroptera during three years of research in ecological infrastructure, however in vineyards only 21 individuals belonging to 6 species were observed.The results of this research showed that ecological infrastructure of integrated and extensive vineyards harboured high number of true bug species whereas in ecological vineyard lower number of species and specimens were found. Higher number of plants from families Apiaceae and Asteraceae attracted more beneficial heteroptera. Ecological infrastructure especially weeds play important role in attracting and enhancing the population of true bugs. We found very few individuals of these insects in vineyards on grape shoots We could conclude that ecological infrastructure has a great impact on abundance and diversity of true bugs and achieve a more sustainable vineyard agroecosystem.