The invention provides a formation process for a polar plate of a dry-charged tube type power lead-acid battery, comprising the preparation of the polar plate, solidification and drying, formation, washing, the soakage of a negative plate, and drying and manufacturing of the polar plate. The formation process is characterized in that the solidification and drying process of the polar plate comprises the following stages: the first stage is the solidification stage which is performed at a temperature of between 35 and 45 DEG C, and the humidity above 95 percent for 24 hours; the second stage is the drying stage which comprises two stages, wherein the first drying stage is performed at a temperature of between 40 and 50 DEG C, and the humidity between 60 and 70 percent for 24 hours; and the second drying stage is performed at a temperature of between 65 and 75 DEG C, and the humidity between 40 and 50 percent for 24 hours. With the invention, Pb02 of a positive plate is more than or equal to 85 percent, Pb of the negative plate is more than or equal to 85 percent, and the water content in the polar plate is below 0.5 percent. Under the conditions of the same volume and the same weight, the capacity and the service life of the polar plate exceed the common battery by 10 to 15 percent; and the dry-charged performance of the polar plate is as follows: initial charge is not needed after liquid is added, and the polar plate can be used after standing for 4 hours.