The sandstone geothermal reservoir is mostly a horizontal lenticular layer or a continuous horizontal layer, in which are clay and mudstone layers with poor permeability. The reinjection fluid is mainly horizontal runoff in the reservoir. The previous research on the reinjection of sandstone geothermal reservoir was aimed at the whole reservoir, and the specific flow direction of the reinjection fluid cannot be determined. The downhole layered multi-parameter monitoring system can identify the vertical layered reinjection capacity. In this paper, a layered monitoring reinjection test was carried out in a perforated well of Guantao Formation. The well is located in the secondary tectonic unit Banqiao sag of Huanghua depression. According to the logging data, the geothermal reservoir was divided into three layers, corresponding to NgI, NgII and NgIII. The measuring instrument had been placed into the well depth of 1800, 1940 and 2050 m, and the reinjection volumes of 35, 45 and 55 m3/h was carried out. The reinjection volume of Ng I, Ng II and Ng III section increased with the total reinjection volume. The amplification of reinjection volume, the reinjection volume per unit length and per unit pressure gradually decreased in the Ng I, Ng II and Ng III. On the whole, the vertical reinjection capacity of the well is Ng I > Ng II > Ng III.