To provide a body cover construction for a motor cycle which can enhance the originality of a vehicle body shape and function well to produce preferable air flows. There is provided a body cover construction for a motorcycle 1 including a body cover 20 having a front mudguard 63 which is provided so as to cover an outer circumference of a front wheel 18 from thereabove, a front cover 21 which covers a front portion 10a of a vehicle body from a front to sides of a headstock 15, step floorboards 23 which are disposed to extend from a lower and rear portion of the front cover 21 to below a mounting seat 12 so that feet of a rider rest thereon, and under side covers 24 which cover sides of the vehicle body which lie below and forwards of the step floorboards 23, wherein, when the vehicle body is seen from a side thereof, a lower edge portion 21u of a front side surface of the front cover 21 extends in a front-to-rear direction and is formed substantially at the same level as a lower edge portion 63u of a mudguard side surface of the front mudguard 63, and wherein a front upper end portion 24p of the under side cover 24 extends upwards to a position which is spaced a predetermined distance away from the lower edge portion 21u of the front side surface.