A molding method for a TPU fabric shoe upper includes: S1, preparing the composite yarn, adding the TPU raw material to the extruder, sliding the yarn through the molding head of the extruder, melting the TPU and coating a molten TPU on the outside of the yarn, forming the composite yarn after cooling by a cooling device; S2, weaving, installing the composite yarn reels with the same color or different colors on a knitting machine and weaving into fabric through the knitting machine; S3, cutting into samples, cutting the fabric into the required size of the need according to requirements, obtaining the sample; S4, molding, putting the sample into a mold of the molding machine, closing the mold and adding pressure, melting the TPU in the sample, and obtaining a shoe upper blank sample after cooling; S5, cutting, cutting the shoe upper blank sample to obtain the shoe upper.