Method for preparing yarn with cloud dyeing effect

A method for preparing yarn with cloud dyeing effect, characterized by comprising the following steps:

• step 1:
• putting a spinning raw material into a spinning box, and heating the spinning box to enable the spinning raw material to be in a molten state;
• step 2:
• mixing dyes with more than one color, and adding a dispersing agent with 0.1-0.5% of a total mass of the dyes to obtain a dye mixed liquor;
• step 3:
• pouring dye mixed liquor obtained in step 2 into the spinning box, mixing the liquor with the spinning raw material in a molten state, and extruding through a spinneret orifice to form a melt fine stream;
• and
• step 4:
• cooling and solidifying melt fine stream obtained in step 3 to form nascent fiber, and oil winding the nascent fiber to obtain cloud dyeing yarn.