The invention discloses a horizontal spiral drum achieving liquid heating constant-temperature automatic cycle. The horizontal spiral drum is simple in structure, convenient to operate, safe and reliable, practical in function and high in automation degree, and liquid unpowered automatic cycle, steam heating constant-temperature automatic control and the automatic core adjusting function of a double-riding-wheel device are achieved, so that running of a drum body is more stable and saves more labor, and the constant temperature of the whole temperature of liquid in the drum body and stirring uniformity observation are achieved accordingly; and the horizontal spiral drum achieving liquid heating constant-temperature automatic cycle is suitable for work procedures, such as tanning, pickling, degreasing, fat liquoring, fur degreasing of fur and dyeing, of the fur and manufactured leather.