∵∠COE是直角，∠COF=34°
∴∠EOF=90°-34°=56°
又∵OF平分∠AOE
∴∠AOF=∠EOF=56°
∵∠COF=34°
∴∠AOC=56°-34°=22°
则∠BOD=∠AOC=22°．
故答案为22°．