A simple divertor code has been developed in order to analyze the divertor transport based on the experimental data. The fluid equations are solved numerically in one dimension along the magnetic field lines, neglecting the cross-field diffusion. In contrast to the conventional divertor code, the boundary conditions are given as the fixed plasma parameter at the divertor plate, which are measured by Langmuir probes. The neutral particle transport is treated in two dimensions including the MHD equilibrium and the real wall geometry by a Monte Carlo code. The interaction between the plasma and the neutral particles is solved self-consistently using the iterative procedure. The convergence is very fast compared with the predictive divertor codes because of the fixed plasma parameter at the divertor plate. Short computational time facilitates systematic analysis of divertor transport. Applying this model to the ohmic divertor plasmas in JT-60U initial experiments, the particle confinement time in the main plasma and the heat diffusivity in the scrape-off layer are evaluated. (author).