  The mass measurement of supermassive black holes (SMBHs) is a very complex
task. Between several methods for SMBH mass measurements, some of them use the
spectral lines, which indicate the motion of the emitting/absorbing material
around an SMBH. Mostly there is assumption of virialization of line emitting
gas in the region close to SMBHs that is used for their mass measurements. In
this paper we will give an overview of methods for the SMBH mass measurements
using broad emission spectral lines observed in Type 1 AGNs. First we give the
basic idea to use the parameters of broad lines to SMBH mass measurements.
After that we give an overview of broad lines from X-ray (Fe k{\alpha}) to the
IR (Pashen and Brecket lines) which have been used for SMBH mass estimates.
Additionally, we describe and discuss a new method for SMBH mass measurements
using the polarization in the broad lines emitted from Type 1 AGNs.
