The invention discloses an improved fixing structure of an oil screen of a European-style range hood. Based on the using direction of the range hood, the oil screen is lower at the lower periphery and higher in the middle part. An oil collection base is fixed between the upper end of a smoke collection hood and the lower end of a flue in a closed loop. The oil collection base is of a hollow frame shape, an oil collection plate extends forwards from the lower end of a back frame of the oil collection base, the part of the oil collection plate above an oil cup is the lowest point of the oil collection plate and is provided with an oil leak hole, and the oil leak hole is communicated with the oil cup. A side protrusion extending outwards is arranged on the lower side at one face of the oil screen, an insertion hole matched with the side protrusion is arranged on the lower side at one face of a smoke hood, and the side protrusion is inserted into the insertion hole. The lower side at the other face of the oil screen opposite to one face of the oil screen is fixed on the oil collection base by a bolt. The invention can ensure the oil screen of the range hood provided with the oil collection base to be assembled on the range hood conveniently and firmly and also to be disassembled easily. The invention has simple structure and easy operation.