Abstract: Physico-chemical properties and extractions of the red pigment of Camellia japonica L. were explored preliminary. Results showed that good yield of pigment could be obtained by 95% ethanol solution(with 10% HCl) of pH 1 at 80℃ for 6 h with the solid2liquid ratio 1∶10 ( g/mL). The Camellia japonica L.
red pigment is classified to anthocyanins, forwhich pH had significant effect on the tone of pigment. The pigment is suitable to acid environment while its good heat resistance. Under sunlight, degradation of the pigment could be accelerated, but regardless of ultraviolet light. Metallicions Na⁺ , Ca^{2 +} , A1^{3 +} , Cu^{2 +} , Zn^{2 +} had no effect on the tone of pigment, but Fe^{3 +} , Pb^{2 +} had severe disadvantageous effect. This kind of pigment has better endurance capability against reducing agent, but it has less resistance capability against oxidizing agent. Addition of glucose, sucrose and salt had no effect on the pigment.

Key words: Key words: Cam ellia japonica L., Pigment, Extraction, Physico2chemical p roperty