In this paper, we intend to investigate the pulse compression through liquid core photonic crystal fiber (LCPCF) by using both finite element method (FEM) and split step Fourier method (SSFM). In order to achieve ultra high pulse compression, we propose new LCPCF design with very high nonlinearity. By using numerical analysis, we investigate the pulse compression, compression ratio and pedestal energy for different core liquids in LCPCF using a generalised nonlinear Schrodinger equation (NLSE). Finally, we compare the results with different designing parameters of PCF. © American Institute of Physics.