Aiming at the problem of bleeding, short construction operation time and insufficient cohesive force of cement stabilized full-deep cold regenerated mixtures, the effect of hydroxypropyl methyl cellulose ether (HPMC) on flexural and compressive strength of cement mortar specimens was studied by adding HPMC to cement sand specimens. The feasibility of adding HPMC into the regenerated mixtures was discussed, and the effects of different HPMC content on the properties of cement stabilized deep cold regenerated mixtures were studied. It is found that HPMC reduces the flexural and compressive strength of cement sand specimens due to air entrainment. Cement hydration in HPMC solution increases the flexural and compressive strength of cement sand specimens compared with cement hydration before HPMC is added. The addition of HPMC reduces the unconfined compressive strength of cement stabilized full-deep cold recycled regenerated specimens. The regenerated mixture has a certain cohesive property and is not easy to segregate, and has good water retention at room temperature and high temperature, basically without bleeding phenomenon.