On the basis of analyzing the principle of two-way memory effect of the shape memory alloy, two miniature optothermal motors are designed and manufactured using sheets of Cu-Zn-Al two-way shape memory alloy. Experiments are carried out to test their driving performance. The experiment results demonstrate that when using a 1064nm YAG pulsed laser with an appropriate output power and frequency as the motors′ driving source, the ratchet-pawl-type optothermal motor can have a precise step distance and the gear-type optothermal motor can have a high rotational speed. This kind of optothermal motors could be integrated and widely utilized in micro-optical-electro-mechanical systems wirelessly with remote controlling.