The invention provides an oil tube centralizer. The two ends of each centralizing piece are provided with chamfers, the included angle between each centralizing piece and the axis of an inner tube is20-70 degrees, and the outer edges of the multiple centralizing pieces are on the same cylinder shape; the axis of the cylinder shape and the axis of the inner tube are coaxial, the minimum positionsof the chamfers of the centralizing pieces can be smaller than the inner diameter of a washover cylinder, after the conical positions at the upper ends of the centralizing pieces are sleeved with thewashover cylinder, the weight of a washover tubular column presses on the centralizing pieces with the included angle between the centralizing pieces and the axis of the inner tube being 20-70 degrees, and the weight of the washover tubular column makes the centralizing pieces to generate bending force towards the interior of the washover cylinder, so that the centralizing pieces are deformed andinwards stored in the washover cylinder; through washover, falling objects such as sand which jams the tubular column can be washed over, the tubular column provided with the oil tube centralizer canbe smoothly subjected to jam releasing, the difficulty of jam releasing work can be reduced, the workover cost of an oil-water well is reduced, and the remarkable economic benefits are achieved.