This study was considered to theoretical establishment. Through European Artistic History Consideration. The paper analysed the characteristic of modern floral art based on the era classification. The environmental floral art has been developed since American started to press the naturalization on 17 century. Based on the styles of cone of Byzantine and S styles of Baroque, the formative floral art has been expended since. To report the expressive floral art, the paper has chosen two different methods. One is external method can classify into the mix and match expression, the natural expression and ethnic expression. Particularly, the classic Georgian and Victoria expression had been a source of the mix and match expression. And the ethnic expression has developed from the old Egyptian which displayed the national character by the three primary colors (red, yellow and blue). The other one is internal expression. The internal expression has divided into the realistic and the abstract expression. The realistic expression has progressed after the Rome era which used the natural material like fresh flower bouquet. The abstract expression is more artificial method in the consideration of color and vagina. The fusion style floral art has developed under the influence of Victorian era which created floral art mixed with the variety of material such as shell, feather, wax and fabric. The effect of floral art has also recognised inc. emotional, decoration, environmental, and educational effect.