Cooperation network is one of the structural social relationships naturally formed in the evolution of human societies. Previous research has focused on well-mixed structures, and yet most individuals in real interactions have sentiments and unequal status in duration and changing in time. This raises the question of whether cooperation can persist despite different sentiments and unequal status of individuals. In this paper, sentiments are included the positive and the negative, and unequal statues are the small node and the big node based the node degree. We develop a game model to study cooperative behaviors based unequal statuses and sentiments, and experimentally examine the model by digital and real networks. Surprisingly, we find that small nodes are more prone to choose positive cooperation relative to comparable big nodes on the promise of enough profits of the tacit knowledge and the excess return. Our results reveal that the unequal status is the hidden mechanism for cooperative behaviors, and provide a new prospective to investigate the evolution of cooperation in more realistic environments.

合作网络是人类社会演进过程中自然形成的结构性社会关系之一。先前的研究集中在混合结构上，但是大多数处于实际交互中的个体在持续时间和时间变化上都具有情感和不平等的地位。这就提出了一个问题，即尽管存在不同的情感和个人的不平等地位，合作是否能够持续下去。在本文中，情感包含正负两个方面，基于节点的度数，不等的雕像是小节点和大节点。我们开发了一个游戏模型来研究基于不平等状态和情感的合作行为，并通过数字和真实网络实验性地检验了该模型。出奇，我们发现，相对于具有可比性的大节点，小节点更倾向于选择积极的合作，因为它们保证了隐性知识的足够利润和超额收益。我们的研究结果表明，不平等地位是合作行为的隐藏机制，为研究更现实的环境中合作的演变提供了新的前景。