The invention provides a method for producing soluble egg powder, which comprises the following steps: implementing mechanical dispersion and emulsion treatment to the egg liquid material; adding at least an auxiliary agent which is selected from a complexing agent, a precipitator and an emulsifier; and implementing spray drying to the egg liquid undergoing dispersion and emulsion treatment. In the method of the invention, mechanical dispersion is used for breaking the particle structures in the egg liquid to form O/W type emulsion, and O/W type egg powder particles can be easily obtained after spray drying; the addition of the complexing agent or the precipitator can reduce the concentration of divalent metal ions in the egg liquid and improve the solubility of the egg powder; and the addition of the emulsifier is beneficial to improving the hydrophilicity of the surface of the egg powder particles. The egg powder produced by the invention can be soluble to normal temperature water and hot water to form uniform emulsion; and when the emulsion is heated, no egg-flower-shaped gel is formed.