This study presented an experimental study on the mechanical behavior of frozen compacted clay subgrade soils with different remoulding water contents w. Six w values (namely, 15, 19, 23, 27, 31 and 35%) were considered. Monotonic triaxial tests were performed at −10 ℃ under a confining pressure of 200 kPa. The results showed that (1) A strain softening behavior was obtained for all stress–strain relationships. And the increase of w resulted in increments in strength and volumetric dilation. (2) The initial elastic modulus E0 increased with w increasing. This could be due to the increment of frozen ice with which the clay particles were bonded together. (3) The higher the w value, the larger the oisson's ratio v and dilation angle ψ, which could also be attributed to the increase of frozen ice favoring the volumetric dilation. (4) As the w value increased, the maximum deviator stress qmax increased, and the increasing rate at wet side was larger than that at dry side. This difference could be due to their different soil fabrics.