The invention provides an engine oil flow configuration method for a lubricating system for a throwing boat diesel engine. The diesel engine is controlled to be fully lubricated in the throwing state, namely an intercepting pipe is configured to an oil suction line of a lubricating pump, and an oil inlet line of the lubricating pump is configured to the oil inlet line of an oil suction opening, a flexible oil pipe, an oil inlet valve, the intercepting pipe, a sub manifold block and the lubricating pump oil inlet end. An oil outlet line of the lubricating pump is configured to the oil outlet line of the lubricating pump oil outlet end, the sub manifold block, a machine filtering device, the sub manifold block and a main oil way. Before the engine oil enters the machine filtering device, an overflow valve is arranged in the sub manifold block; it is guaranteed that the engine oil pressure of the main oil way ranges from 0.25 Pa to 0.3 Pa under the rated speed of the diesel engine, the opening of the oil inlet valve is reduced, and the continuous overflow rate of an overflow opening of the overflow valve is maintained within the range of 1-2 L/min; and after it is verified that the engine oil pressure of the diesel engine is not smaller than 0.05 MPa in the idling state, the drift diameter of the intercepting pipe is designed according to the opening of the oil inlet valve, the engine oil pressure of the diesel engine in the rated speed and idling state is verified again, and the waste of resources is avoided.