The invention discloses an integrated test piece for accelerating polishing and abrasion of road surfaces and a preparation method thereof. The integrated test piece comprises an aggregate layer, a mortar layer and a concrete layer in sequence from top to bottom. For the integrated test piece, the cost is reduced, and furthermore the hardness can meet the requirement for the polishing and abrasion test, so that the integrated test piece can be used as a general test piece for polishing and abrasion. The preparation method of the integrated test piece mainly comprises the following steps: preparing aggregates, preparing two types of dry sand, discharging, blowing sand, preparing mortar cement, filling mortar, curing, preparing the concrete layer and demolding. By virtue of the prepared concrete layer, the hardness is improved, the cost is reduced, and the integrated test piece applicable to the polishing and abrasion test is manufactured.