The invention provides a petal releasing device for rose processing, and relates to the field of petal processing equipment. The petal releasing device for rose processing comprises a petal recyclingbin, a discharging port is formed in the right side of the petal recycling bin, a recycling box is arranged in the recycling bin, and the right side of the recycling box penetrates through the discharging port, and extends out of the recycling bin; and a releasing chamber communicates with the top of the petal recycling bin, a first supporting rod is fixedly connected with the inner wall of the releasing chamber, and a first clamping block is fixedly connected with one end, away from the inner wall of the releasing chamber, of the first supporting rod. According to the petal releasing device for rose processing, a crank can be driven to rotate through rotation of a motor, therefore a releasing pipe can move up and down, a crown at the top of a stalk can be squeezed through up-down movementof the releasing pipe, so that petals on the crown are released, the working efficiency is effectively improved, the released petals are more sanitary, and the damage to a petal structure is reduced.