To investigate bicyle injuries and localization of trauma, and their expression with clinic and social parameters: age, gender, date, traumatic lesion, medical treatment and frequency of traumatic lesion.133 cases that were admitted to the emergency service due to bicycle injuries between 2001 and 2006 were incorporated into the scope of this study retrospectively, and were selected owing to the automation system in our hospital The study includes 133 cases of bicycle accidents, composed of 32 female (24,10%) and 101 male (75,90%) patients. It is usually the male who have bicycle accidents. The period between May and September is considered as significant for bicycle accidents. In 100 cases (75,1 %) only one part of the body was subject to traumatic lesion Upper extremities, face and head are the parts of the body which were subject to most traumas. The trauma was on the right side of the body in 56 cases (42,10%). 64 cases (48,10%) took medical treatment, and 69 cases (51,90%) had to take surgical treatment. A forensic report was drawn up for each case that was brought to our hospital for bicycle injuries. The reports for 90 cases indicate that a simple medical intervention was required to treat the patient. It is generally the male who suffer from bicycle accidents. In our country one-fifth of bicycle accident victims are taken to a hospital by ambulance. Accidents most frequently happen in near vicinity. The road for cycling and the structure of the road are important factors. Bicycle accidents increase in number in summer vacations during which schools are closed. The injuries due to bicycle accident are generally on extremities, face and head.