The invention discloses a special infusion liquid medicine heating device which comprises an arm barrel and a medicine tube heater. The arm barrel is of a barrel-shaped structure, a hand outlet is formed in the front end of the arm barrel, an arm inlet is formed in the rear end of the arm barrel, a tube outlet, a tube passing opening and a tube inlet are formed in the upper end of the arm barrel,the tube inlet is formed in the upper end of the hand outlet and is communicated with the tube outlet via the tube passing opening, and the medicine tube heater is arranged at the upper end of the armbarrel, is arranged on a side of the tube outlet and is close to an end of the hand outlet.