The invention discloses a reaction tube label printing, conveying and pasting method. The method comprises the steps that a, printing is carried out, and particularly, label paper is printed on a label belt; b, the label paper is peeled off, and particularly, the label paper is peeled off from the label belt based on a first suction cup; c, the label paper is rotated, and particularly, the first suction cup is rotated based on a rotating mechanism; D, the label paper is transferred, and particularly, the label paper is transferred from the first suction cup to a second suction cup based on thesecond suction cup; E, the label paper is conveyed, and particularly, the label paper is conveyed by a label paper conveying device to two rollers by means of a terrestrial heat suction cup; and F, the label paper is pasted, particularly, a reaction tube is moved to the label paper, the two rollers are driven, and the label paper is pasted to the reaction tube. The reaction tube label printing, conveying and pasting method is easy to implement, high in automation degree and high in label paper pasting efficiency.