**Abstract**

In a liquid environment, optical trapping and multifunctional manipulation of biological cells, in a noncontact, noninvasive, and high-precision way, have become one of the research focuses in the field of integrated optics, biophotonics, and clinical medicine. However, it still faces great challenges to perform multifunctional manipulation in very narrow spaces with high flexibility, including stable retaining, controllable deformation, and precise regulation of a cell chain. Therefore, in this chapter, we introduce the multifunctional manipulation for biological cells based on the elaborately designed fiber probes. With the probes, the sequential organization, precise regulation, and bidirectional transportation of the cell chain were performed. We also discuss the potential applications of fiber probes on the endocytosis and exocytosis purpose, which will play an important role in the detection and treatment of complex disease.

**Keywords:** optofluidic manipulation, fiber probe, cell chain, biophotonics, fiber tweezers
