Abstract: The diglycidyl ether of 1, 3-bis (4-hydroxyphenyl)adamantane(DGEBAD) with low molecular weight was synthesized from 1, 3-bis (4-hydroxyphenyl) adamantane (BHPA) and epichlorohydrin (ECH) by two-step method. The structure and molecular weight were confirmed by FTIR, ¹H-NMR and gel permeation chromatography(GPC), and epoxy value was obtained by titration. The rheology property was also characterized by rotational rheometer. DGEBAD was cured with 4, 4'-diaminodiphenyl methane (DDM). The mechanical properties, water absorption rate and heat resistance characteristics of the cured DGEBAD-DDM resin system were investigated. The tensile strength and the glass transition temperature of the cured DGEBAD-DDM resin system is 90 MPa and 163℃, respectively and 5% mass loss temperature occurs at up to 401℃. The water absorption rate of the cured DGEBAD-DDM decreases by 31.60% compared to the cured epoxy resin E51-DDM.