A car door latch step comprises: a step, a lower engagement recess (31) and a first connection hole (23) being arranged at one end of the step; a support (4), a hook (43) and an adjustment hole (40) being respectively provided at two sides of one end of the support (4), and the hook (43) being used to engage with a car door latch (92); a first pin (8) fixed in the first connection hole (23), wherein the adjustment hole (40) of the support (4) is movably disposed around the first pin (8), the lower engagement recess (31) is positioned under the car door latch (92) and takes the first pin (8) as a support point to press against the car door latch (92), and the car door latch (92) is positioned between the hook (43) and the lower engagement recess (31); and an elastic block (5) fixed at the other end of the support (4).