Since the optical tweezers technology was discovered in 1986, the study and application of the mechanical effect of light has become an important branch of optical research. Unlike conventional microscope-configured optical tweezers platforms, optical tweezers based on ring-core fibers offer the convenience of more dimensional particle manipulation and separate the microscopic system from the manipulation system. The optical tweezers can capture particles, but if you want to further manipulate the particle's attitude, you need an optical micro-optic hand based on a multi-core fiber. If you want to emit the captured particles, you need an optical gun based on a coaxial dual-waveguide fiber. This article mainly introduces the design of optical tweezers, optical hands and optical guns based on different kinds of optical fibers and their manipulation effects on particles.