The invention discloses an old wall surface renovating ecological face brick construction process which comprises the steps of construction starting pretreatment, base layer treatment, marking brick pasting, ecological face brick inlaying and pasting, seam wiping and cleaning, an old base surface does not need to be knocked off, construction is convenient, no garbage is produced, the construction period is short, cost is low, and ecological soft magnetic face bricks are light, thin, space-saving, cement-saving, anti-pollution and self-cleaning. The fireproof, anti-seismic, anti-cracking, good in texture, good in ductility, resistant to freezing and thawing, durable, resistant to acid and alkali, high in weather resistance, breathable, fireproof, ecological, safe, environment-friendly, healthy in living, capable of being completely regenerated and free of three-waste discharge.