To provide an object distance detection device capable of performing object distance detection in a short operation time.

In this object distance detection device, a light beam from the object is received by a pair of light receiving element arrays having a sufficiently wide visual field to a photographing screen for object distance detection, and the object distance is detected based on two-system image information outputted from the pair of light receiving element arrays. The object distance detection device is equipped with a first slippage arithmetic means (Δd slippage arithmetic circuit 22) for operating the slippage of the two-system image information outputted from the pair of light receiving element arrays, and a second slippage arithmetic means (Δe slippage arithmetic circuit 23) for operating the slippage of a micro-part of the pair of light receiving element arrays based on the operation result from the first slippage arithmetic means. In the device, the object distance is operated based on the first slippage operated by the first slippage arithmetic means and the second slippage operated by the second slippage arithmetic means.