The invention belongs to the field of porcelain product and relates to Dehua Jianbai porcelain and a preparation technology thereof. The prepared Dehua Jianbai porcelain comprises a Jianbai porcelain body and Jianbai glaze; the Jianbai porcelain body is prepared from Dehua kaolin, low-temperature clay, a cold stone, Xianyou potassium feldspar, talc, quartz and bentonite at a ratio; and the Jianbai glaze is prepared from the cold stone, the quartz, limestone, aluminium silicate, the talc and the Dehua kaolin at a ratio. According to the Dehua Jianbai porcelain, the raw materials which are large in storage quantity and low in price are selected as the raw materials of the Jianbai porcelain body and the Jianbai glaze, and chemical components of the raw materials are strictly controlled, so that the transparency and the compactness are improved; through measurement, the whiteness is 70-78 degrees, the density is 2.5g/cm<3>, the water absorption rate is smaller than 0.1% and the transmittance is greater than 18% (1mm in thickness); and the porcelain has the artistic effect closest to that of traditional Dehua Jianbai porcelain.