The lower lid has relatively little movement compared to the upper lid. The inferior orbicularis oculi muscle functions more like a hammock, both to hold the eyeball from dislocating outward and to help drain tears through the lower lacrimal system to the nasolacrimal duct. The purpose of lower eyelid reconstruction surgery is to reposition the lower eyelid and place tear spillage and outward dislocation of the eyeball. 1. Static Suspension. A tendon is placed across the inner and outer jairus, pulled tight and secured to the outside of the orbit so that the lower lid pockets the eyeball, and the position of the fixation is very important. It is important to fix the position so that it is too high to obscure the eye and too low to be effective. 2. External canthoplasty. This includes a variety of surgical evolutions, such as canthopexy, canthal cartilage strip surgery, etc. It is suitable for children who do not have special requirements for the position of the inner canthus. 3.Internal canthoplasty. It is suitable for patients with ectropion of the medial canthus and tear overflow. The oval-shaped conjunctiva is excised and re-sutured for fixation to return the ectropion tear dots to their normal position and restore the normal tear drainage channels. 4.Transfer of temporalis muscle. The procedure is performed by transferring the striated temporalis muscle + fascia or fascia lengthening followed by suturing at the upper and lower eyelids to assist in closure. This procedure relies on a branch of the trigeminal nerve (deep temporal nerve) to drive the muscle contraction and this procedure cannot redirect the transient reflex. 5. Direct neuralization of the orbicularis muscle. The nerve impulses of the temporal branch of the healthy lateral nerve are directly encapsulated in the orbicularis oculi muscle on the side of the facial palsy through a trans-facial nerve graft. This procedure is less efficient and has unpredictable results. 6. Free muscle graft. Vascularized muscles such as the vastus cervicis in conjunction with a transfacial nerve graft technique can reconstruct eyelid function if successful. Overall, I do not advocate aggressive and complex lower lid reconstruction surgery in children. For individual patients with lower lid laxity, external canthoplasty will achieve satisfactory results.