Biotite plagiogneiss samples from Hongqiyingzi Group in Chicheng County of northern Hebei Province have porphyroblastic texture with medium-fine grained lepido-granoblastic groundmass and gneissic structure. Blastopsammitic texture is preserved locally. The rocks mainly consist of plagioclase (28%～32%), quartz (35%～40%) and biotite (18%～25%), with minor garnet (2%～8%,as porphyroblast) and graphite (1%～4%). Garnet compositional characteristics reveal that the temperature and pressure fell contemporaneously during the main metamorphic evolution. All the biotite plagiogneiss samples have wider variation in major components. The total REE values are not very high and vary in the range of 49.45×10^-6～140.10×10^-6, displaying LREE-enriched and HREE-flattened patterns with chondrite-normalized (La/Yb)_CN of 5.07～8.70 and LREE/HREE of 5.23～9.16. Most of these samples show intermediate negative Eu anomalies and weak negative Ce anomalies, the chondrite-normalized Eu/Eu^* and Ce/Ce^* values are separately 0.63～0.81 and 0.82～1.01, and the rocks have lower Rb, Sr, Cs, Ba, Zr, Hf, Nb, Ta, Th and U and higher Sr/Ba and Th/U ratios relative to the upper crust. The geochemical characteristics of the biotite plagiogneiss samples from Hongqiyingzi Group suggest that their protolith might have been pelitic (or pelitic-bearing) sandstone and was formed in a tectonic environment similar to the continental island arc. This recognition is important with regard to understanding the tectonic evolution of the central part of the northern margin of the North China Craton.