The invention relates to an analysis method of concrete blank layer covering time. The method includes the steps that first, discharging time of a cable crane in different portions of a storehouse face is acquired; second, the moving trajectory and storehouse flattening altitude data of a storehouse flattening machine are acquired, and the paving time and the storehouse flattening completing time of all the positions in the storehouse face are determined; third, the marching trajectory and vibrating data of a vibrator are acquired, and the vibration completing time of all the portions in the storehouse face is determined; fourth, for all the positions of all blank layers in the storehouse face, the discharging time difference, the storehouse flattening time difference and the vibration time difference of the upper blank layer and the lower blank layer of each position are calculated, the concrete covering time of each position, the average concrete covering time of the blank layers and the in-time covering rate are calculated, and a prompt is given for occurring problems. With the method, the overall covering condition of the blank layers poured with concrete and the covering time of all the portions in the blank layers can be analyzed quantitatively in real time, the problem that the covering time can not reach the standard is found in time, the phenomenon that the covering is not in time is reduced, the in-time covering of the concrete blank layer is effectively stimulated, and the concrete pouring quality is improved.