本文首先简述了真空镀膜技术原理、适用范围,而后对疑难客体上汗潜手印进行真空镀膜显现和后期加强的实验操作。通过实验验证真空镀膜技术可以成功显现如人民币、擦手纸巾、热敏纸、砂纸砂面、烟头、水浸泡过的牛皮纸信封及塑料袋等疑难客体上的汗潜手印,而且显现效果明显优于其他方法,尤其是对水浸检材。 This paper first briefly describes the vacuum coating technology principle, scope of application, and then on the difficult guest sweat latent fingerprints vacuum coating appears and later strengthened experimental operation. Through the experiment, the vacuum coating technology can successfully show the sweat latent fingerprints on the difficult objects such as RMB, paper towel, thermal paper, sandpaper sandpaper, cigarette butts, water-soaked kraft paper envelopes and plastic bags, etc., and the effect is obviously better than Other methods, especially for flooding.