In order to realize a new and simple magneto-optical trap(MOT) atomic capture, a combination of large aperture single beam and multiple mirrors was used to simplify the magneto-optical trap structure, and permanent magnets were used to provide the required gradient magnetic field to increase the portability of cold atom capture devices. The polarized light in the chamber and the composition of the experimental light path were analyzed and verified by experiments. The number of atoms in different dispenser currents and the change of the group lifetime after the current is turned off were measured by the methods of collection fluorescence, release and recapture. The results show that the size of the trapped ⁸⁷Rb group is about 1.5 mm, the number of cold atoms is about 1.7×10⁷, and the temperature of the group is about 177 μK, respectively. The structure of the magneto-optical trap system can achieve ideal atomic trapping on the basis of miniaturization, and the research results provide a reference for the field of new quantum sensors.