In order to investigate the effects of tyreinduced soil compaction on soil properties and crop root system under notillage condition in North China, a threeyear (2013—2016) field experiment was carried out in Hebei Province. Four treatments, including notillage (NT), compaction lane under no-tillage (CNT), subsoiling tillage under no-tillage (STNT) and subsoiling tillage in compaction lane under no tillage (CSNT), were performed with randomized complete block design, with three replications for each treatment. The effects of different treatment on soil aggregation, soil bulk density, soil penetration resistance, maize root dry weight and roots distribution were evaluated. According to the result, there was a cumulative effect on macroaggregates content over time in CNT treatment, the value of this indicator was gradually decreased from 2014 to 2016; in the meantime, it was increased with the increase of soil depth. It was also indicated that soil mean weight diameter (MWD) was significantly reduced under CNT treatment. The soil bulk density for all the four treatments was increased with soil depth from 2014 to 2016, and the soil bulk density throughout the 0~40cm soil profile presented a descending order of CNT, NT, CSNT and STNT. The soil bulk density under CNT treatment at 10~40cm depth was significantly increased by 14.2%（P<0.05）, 15.7%（P<0.05） and 17.1%（P<0.05）, respectively, compared with those for NT, CSNT and STNT treatments. The soil penetration resistance was one of the key soil properties, the values for this parameter presented a descending order of CNT, NT, CSNT and STNT, with the increase of soil depth. The average soil penetration resistance under CNT treatment was increased by 38.2%（P<0.05）, 589%（P<0.05） and 59.4%（P<0.05）, respectively, when compared with NT, CSNT and STNT treatments. The wheat root length density and maize root space distribution in 0~20cm soil layer in CNT treatment were better than those for NT, STNT and CSNT treatments, in cropping seasons from 2013 to 2016. The mean root content of summer maize under CNT treatment was increased by 24.0%, 24.9% and 19.3%（P<0.05）, respectively, compared with NT, STNT and CSNT treatments during a period from 2014 to 2016. There was only 11.6% of the average root content at 20~40cm soil depth. The maximum mean wheat root density of wheat under CNT, NT, STNT and CSNT treatments was 0.63cm/cm3, 0.83cm/cm3, 0.84cm/cm3 and 0.83cm/cm3, respectively. Finally, it was concluded that the soil under no-tillage was less compacted in spite of the compaction from nature sedimentation and seeding, but the tire induced compaction had a significant effect on soil properties and crop root growth under no-tillage, the subsoiling tillage could significantly decrease soil compaction. Although the no-tillage area can increase the soil bulk density and soil penetration resistance, the effect was negligible, and there was no need for loosening measures.