The invention relates to a light-weight garment with a cellphone holder. The light-weight garment comprises a garment body (1), a front body of the garment body (1) is provided with a plastic gear (2), a support (4) is connected on the plastic gear (2), and the cellphone holder (3) is connected on the support (4). The light-weight garment is made by fabric which comprises warp yarns and weft yarns, the warp yarns cross the weft yarns to be interwoven to form pile loops, and at least two weft yarns exist between each two adjacent pile loops which are formed by the warp yarns. When a user holds a cellphone for playing for a long time and then feels achy on arms, the user can place the cellphone on the cellphone holder and adjust the support, so that two hands can be free while ache is avoided. The light-weight garment has the advantages of light weight, laddering resistance, high hydroscopicity, softness, good hand feeling and the like.