To provide a powder for a chlorella drink, being the powder capable of forming the chlorella drink by dissolving the powder in a liquid such as water and hot water, capable of providing the homogeneous product good in color, taste and flavor, capable of being easily dissolved in the liquid, to prove no rough feeling, and excellent in nutrition.

This powder for the chlorella drink to be drunk by dissolving the powder in the liquid is characterized in that a minute chlorella powder having 2-10 μm particle diameter, obtained by drying the chlorella to provide the chlorella powder, and subjecting the chlorella powder to a crushing treatment to separate the bond between cells and to crush the cell wall is used as a raw material, and a minute grain powder obtained by subjecting the grain to the crushing treatment and having 20-30 μm particle diameter is added to the minute chlorella powder, and homogeneously mixed so as to have the mixing ratio of the minute chlorella powder to the minute grain powder regulated so as to be (1:9)-(4:6).