Information about three-dimensional structure of protein is important to clearly understand its character and function in molecular level. Protein structure determination through laboratory testing needs highly cost of steps and instrument. Three dimensional structure of protein can be scientifically predicted using several in silico methods. The structure of allergen protein was predicted using SWISS-MODEL as homology method in this research. The result showed that structure prediction of allergen protein B7TWE7 (UniProt ID) from Fagus sylfatica (beechnut) have three-dimensional structure with identity value 72% and e-value = 3,4x10-58. This study used the 1e09A (PDB ID) of Prunus avinus (cherry) as a template.