Prepare matrigel and add it to the lower hole of the ibidi angiogenesis slide. Put the matrigel glue into the incubator to make it coagulate. Prepare a cell suspension with a density of 2 × 10 5 cells/mL, and add 50 μL of the cell suspension to the solidified ibidi angiogenesis slide. According to the growth rate of the cells, images are collected periodically for observation.