The invention discloses a tissue anastomat made by low-temperature phase-change memory alloy. The tissue anastomat comprises a suture line and a non-damage medical suture line fixedly connected with one end or two ends of the suture line. The suture line is a titanium-nickel alloy wire which has a linear memory shape in the range from 18 to 26 DEG C. The tissue anastomat made by low-temperature phase-change memory alloy has following beneficial effects: with a product, the suture line is at the conventional room temperature ranging from 18 to 26 DEG C in an operating room; after the package of the product is opened, the suture line naturally restores in the linear memory state; before stitching, the suture line is shaped under effect of external force; after stitched into a human body, the suture line again restores in the linear memory state; and purposes of conducting an intradermal suture operation smoothly, improving saturation precision of the operation and decreasing the duration for saturation of operation are fulfilled.