Pulsars are an important constituent in the high energy universe.

They accelerate particles to very high energies in three ways; electric field
acceleration in the magnetosphere, conversion of Poyinting flux to particle kinetic
energy in the wind region, and shock acceleration in the nebula region.

Almost half a century has passed since the discovery of the first pulsar, but the
emission mechanism is not yet fully understood. Recent observations of pulsars with high
energy gamma-rays, which covered the highest end of the energy spectrum, brought a
significant progress in our understanding of the pulsar. At the same time, a new
"mystery" popped up.

In this talk, after giving a brief introduction of pulsar physics, I will present the
rapid progress in the pulsar physics in the last 5 years based on the MAGIC and Fermi
measurements. I will explain how the Polar Cap was excluded as a gamma-ray emission
region, why even basic Outer gap model cannot explain the Crab pulsar spectrum and what
kind of new models are newly proposed. The possibility to use very high energy gamma-ray
pulsation as a prove for pulsar wind physics will also be discussed. The talk will be
closed with the future prospect for very high energy gamma-ray observation of pulsars
with CTA.