rear end can press the cloth strongly thus the cloth can fully be dried and finished without wrinkle at this time since there are a plurality of rows of the dents and they are formed from big to small as mentioned above the amount of steam held in the dents can be decreased gradually also since there are no dents at the rear end part which puts the finishing touches to the cloth in the ironing of the ironing surface 5 the rear end part contributes to making the cloth fully dry and finishing the cloth smoothly as a result the smoothness of the ironing surface and the effect of wrinkle elimination can be improved fig5 and fig6 show the ironing seat of a dry electric iron heater 2 is buried in soleplate 3 whose surface forms ironing surface 5 there are multiple dents on the ironing surface 5 where the heater is embedded and each dent is composed of a group of pits which include four pits 7 each group of pits is radially distributed from the center line of the heater 39 s projection on the ironing surface to both sides of the center line of the heater 39 s projection meanwhile the caliber and depth of the pits change from big to small w1 gt w2 gt w3 the caliber of the pit in the heater 39 s projection center has the biggest caliber and depth there is no any pit in the center and rear end of the ironing surface along the predetermined length in the longitudinal direction of the electric iron also the rear end part has a dent free area where there is no pit across a full width of the ironing surface other effects of this embodiment.