It is of great significance to construct bioactive ingredients delivery system based on the interaction between food molecules. In this paper， curcumin is selected as the active ingredient， using lactoferrin， EGCG （epigallocatechin gallate）， and polysaccharides （sodium alginate， SA and gum Arabic， GA） as materials. First， alkaline treatment was used to prepare LF-EGCG binary nanoparticles， and then based on thermal induction and electrostatic interaction methods， the ternary composites were constructed， and the interaction between the three was analyzed using fluorescence and infrared spectroscopy. The results showed that a covalent reaction occurred between lactoferrin and EGCG in the ternary composite， and the polysaccharides mainly interacted with each other through hydrogen bonding and hydrophobicity. The effect is combined with the binary complex. On this basis， the curcumin emulsion was constructed by layer-by-layer self-assembly method and its interface structure and stability were analyzed， its rheological properties， bioaccessibility and stability were also measured. The results showed that the double-layer emulsion formed by polysaccharides can effectively prevent the aggregation of droplets， inhibit the degradation of curcumin， improve curcumin's bioaccessibility and storage stability. Gum Arabic itself has strong emulsifying activity and steric hindrance， so in the H（LF-EGCG）-GA ternary composites stabilized emulsion， the loss of curcumin is minimal. The results in this paper provide a useful reference for building a safe， high bioaccessibility and controlled release curcumin delivery vehicle.