The invention discloses a detection method of image feature points of a controllable quantity. The detection method comprises the following steps: presetting an expected point quantity of image feature points to be registered; according to the expected feature point quantity and an image size, calculating a point and surface ratio; when the image feature points are detected, calculating the point and surface ratio in real time; and comparing the calculated point and surface ratio and an expected point and surface ratio: if the point and surface ratio which is calculated in real time is greater than the expected point and surface ratio, improving a feature point detection threshold value, and if the point and surface ratio which is calculated in real time is smaller than the expected point and surface ratio, lowering the feature point detection threshold value. The method disclosed by the invention is simple, can adapt to a majority of image registration methods based on the feature points, the quantity of the feature points and feature point distribution are basically controlled to be even, and image registration precision is finally improved. The detection method can be applied to the on-satellite remote sensing image registration of a satellite, and also can be applied to other ground image registration.