This paper describes a method to transplant neurospheroid network onto the rat brain. We first patterned the uniform sized neurospheroids on the PDMS microchamber, and cultured for 1-2 weeks. After 2-week culture, the neurospheroids tightly connected each other with extending their neuronal processes (e.g. dendrite, axons) and formed neuronal network. We realized that the neurospheroid network can be transferred from the PDMS microchamber onto the glass plate or the rat brain. These transferred neurospheroid network had also neuronal activities. We believe that this transfer method of neurospheroid network should be a useful model for the tissue engineering and medical transplantation.