The invention discloses an auxiliary device for ecological restoration greening. The auxiliary device comprises a gauze barrier component and a sleeve grabbing mechanism, and the gauze barrier component comprises a pair of gauze devices inserted into sandy land in parallel; each gauze device comprises a plurality of fixing piles used for inserting the sand land, and a linear gauze and diagonal gauzes which are used for preventing sand movement by wind are fixedly connected between two adjacent fixing piles; diagonal vertical sleeves are fixedly connected with the middles of the diagonal gauzes, and elastic rubber bands are fixedly connected between the diagonal vertical sleeve and the two adjacent fixing piles separately; and the diagonal vertical sleeve is a magnetic material sleeve. According to the auxiliary device, butt joint between the two diagonal gauzes can be finished through the sleeve grabbing mechanism, and the two diagonal vertical sleeves are connected through U-type bolts in a plug-in mounting mode; the automation degree is high, and manual butt joint and plug-in mounting can be omitted; in the operating process, the requirement for the locating accuracy of the diagonal vertical sleeves is not high, and it is ensured that the diagonal vertical sleeves can be attracted; and thus, the laying quality of the gauze barrier component is ensured.