Cupric oxide (CuO) is an affordable and valuable semiconductor material with brilliant physiochemical features such as antibacterial, antioxidant, low-cost, as well as non-toxicity. Also, this metal oxide has promising usages in water remediation, biomedical, bio-sensors, electrodes, photocatalysts, and so on. On the other side, polymers play a notable role in social life. By insertion of CuO into polymers, new materials with developed features for diverse applications can be achieved. So, there is a requirement to attain current data and collected information about them. Thus, this comprehensive review focuses on the design, properties, and applications of polymer/CuO nanocomposites (NCs). CuO NCs are introduced in three parts, bio-NCs, conductive NCs, and other NCs with different polymers, and significant usages of the manufactured materials are presented in remediation, sensing materials, drug delivery, catalysis, biomedical, nanofluids, textile, lithium-ion batteries, and solar cells. At first, this review presents a narrative summary of the eco-friendly approaches and utilization of nano-sized CuO. Then, surface treatment methods of this metal oxide by various modifiers for good dispersion in the matrixes are described. After that, various polymeric hybrids of CuO are introduced, and the influence of nano-CuO on the polymer characteristics is examined.

氧化铜（CuO）是一种价格合理且有价值的半导体材料，具有出色的理化特性，例如抗菌，抗氧化剂，低成本以及无毒。而且，该金属氧化物在水修复，生物医学，生物传感器，电极，光催化剂等中具有有前途的用途。另一方面，聚合物在社交生活中起着重要作用。通过将CuO插入聚合物中，可以获得具有针对各种应用开发的功能的新材料。因此，需要获得当前数据并收集有关它们的信息。因此，本篇综述着重于聚合物/ CuO纳米复合材料（NCs）的设计，性能和应用。CuO NC分为三个部分，生物NC，导电NC和其他具有不同聚合物的NC，在补救，传感材料，药物输送，催化，生物医学，纳米流体，纺织品，锂离子电池和太阳能电池等方面，已展示了制造材料的重要用途。首先，本综述介绍了生态友好型方法和纳米级CuO利用的叙述性摘要。然后，描述了通过各种改性剂对该金属氧化物进行表面处理的方法，以使其在基质中具有良好的分散性。之后，引入各种CuO的聚合物杂化物，并研究了纳米CuO对聚合物特性的影响。描述了通过各种改性剂对该金属氧化物进行的表面处理方法，以使其在基质中良好分散。之后，引入各种CuO的聚合物杂化物，并研究了纳米CuO对聚合物特性的影响。描述了通过各种改性剂对该金属氧化物进行的表面处理方法，以使其在基质中良好分散。之后，引入各种CuO的聚合物杂化物，并研究了纳米CuO对聚合物特性的影响。