The magnetic properties, including Curie points, magnetic phases transition and magnetic entropy changes, of (Gd_(1-x)RE_x)_5Si_4(RE=Dy, Ho) alloys were systematically studied. The results show that the alloys keep the Sm_5Ge_4 orthorhombic structures as Gd_5Si_4, and the Curie points of the alloys almost linearly decrease with increasing content of x, so that the Curie points can be adjusted by adding different concentrations of Dy or Ho in the alloys. The magnetic properties of these alloys obey second order transition. The costs of these alloys are cheaper than that of Gd-Si-Ge alloys because there is not expensive element such as Ge. The large magnetic entropy change at low fields (<2 T) and wide temperature ranges of these alloys suggest that they are suitable to be the gradient function materials and candidates of magnetic refrigerants at room temperature with low fields. The results of the magnetic properties, including Curie points, magnetic transition and magnetic entropy changes, of (Gd_ (1-x) RE_x) _5Si_4 (RE = Dy, Ho) alloys were systematically studied. The results show that the alloys keep the Sm_5Ge_4 orthorhombic structures as Gd_5Si_4, and the Curie points of the alloys almost linearly decrease with increasing content of x, so that the curie points can be adjusted by adding different concentrations of Dy or Ho in the alloys. The magnetic properties of these alloys obey second order transition. The costs of these alloys are cheaper than that of Gd-Si-Ge alloys because there is not expensive element such as Ge. The large magnetic entropy change at low fields (<2 T) and wide temperature ranges of these alloys suggest that they are suitable to be the gradient function materials and candidates of magnetic refrigerants at room temperature with low fields.