  The existing large scale weak lensing surveys typically reserve the best
seeing conditions for a certain optical band to minimize shape measurement
errors and maximize the number of usable background galaxies. This is because
most popular shear measurement methods contain explicit or implicit thresholds
on the galaxy-to-PSF (point spread function) size ratio, below which their
shape measurement errors increase abruptly. Using the DECaLS data, we have
previously demonstrated that the Fourier\_Quad method performs very well on
poorly resolved galaxy images in general. It is therefore a ready tool for
shear measurement with multi-band images regardless of their seeing conditions.
In this paper, we apply the Fourier\_Quad pipeline on the multi-band images
from the third public data release of the Hyper Suprime-Cam Subaru Strategic
Program. We show that the shear catalogs from the five optical bands
(g/r/i/z/y) all pass the field-distortion test with very high accuracy. Using
the LOWZ and CMASS galaxies as foreground lenses, we show that the errorbar in
the galaxy-galaxy lensing measurement can be decreased by factors around 15\%
by combining shear catalogs from different bands. This indicates that it is
worthful to do multi-bands shear measurements for a better shear statistics.
