Abstract: In order to generate vectorial focal field with special properties, according to the similarity between the slot antenna and linear polarizer, a metasurface with multiple subwavelength slot antenna arrays with different directions is investigated. It is used as a discrete pupil filter with complex amplitude. The incident radial polarized light passes through this filter and is focused by a high numerical aperture lens. Then the diffraction-limited ultra-long 3-D optical tube can be obtained in the focal region. Since the slot antenna can manipulate the amplitude and phase locally, every ring has its own transmittance and binary phase shift (0/π) so that it can be used to generate special vectorial focal field. This type of metasurface can guide us to find a new way for generation and manipulation of vectorial fileds.