 highlights a comprehensive summary of the representative promising applications of metal halide perovskite materials, including traditional optoelectronic devices, solar cells, light-emitting diodes, photodetectors, lasers, and cutting-edge technologies in terms of neuromorphic devices, artificial synapses and memristors, and pressure-induced emission. For each application, the fundamentals of the field, the current progress and the remaining challenges are provided, based on the up-to-date works.