mjhjmtu

I don't know how to plot diagram like a "#", anyone could give some tips?

Thank you!

Welcome to TeX.SE! Can one draw such a graph? Sure. Are people here willing to do that for you? Well this will depend on their mood and also how new you are. Believe me, it is much more fun to do it on your own. Note also that there are 3d packages and nonlinear transformations etc. which can do a much better job if you have a concrete scenario and want more than just a cartoon.

documentclass[tikz,border=3.14mm]standalone
usetikzlibraryintersections
defldarray"i","i+1"
defluarray"k","k+mu","k+1"
begindocument
begintikzpicture
foreach X in 1,2,3
draw[name path global=hor-X-0] (0.1*X,2*X) to[bend left=12] ++ (5,1);
foreach X in 1,2
draw[name path global=vert-X-0] (2*X-0.5,1+0.1*X) to[bend left=15] ++ (0.3,7);
foreach X [count=XX starting from 0] in 1,2,3
foreach Y [count=YY starting from 0] in 1,2
pgfmathsetmacroldldarray[YY]
pgfmathsetmacroluluarray[XX]
path[name intersections=of=hor-X-0 and vert-Y-0,by=pXY] (pXY)
node[circle,fill,inner sep=2pt,label=below right:$g_ld^lu$];
endtikzpicture
enddocument

Follow marmot's sample,

Notice usetikzlibraryintersections and in the following code, define $Y= 1,2$ is the Horizontal line, and $X=1,2,3$ is the vert...

begincenter
begintikzpicture
foreach X in 1,2,3
draw[name path global=hor-X-0] (0.1*X,2*X) to[bend left=12] ++ (5,1);
foreach X in 1,2
draw[name path global=vert-X-0] (2*X-0.5,1+0.1*X) to[bend left=15] ++ (0.3,7);
foreach X in 1,2,3
foreach Y in 1,2
 ifnumY=1
 deflyi
 else
 deflyi+1
 fi
 ifnumX=1
 defldk 
 else
 ifnumX=2
 defldk+mu
 else
 defldk+1
 fi
 fi
 path[name intersections=of=hor-X-0 and vert-Y-0,by=pXY] (pXY)
 node[circle,fill,inner sep=2pt,label=below right:$g_ly^ld$];
endtikzpicture
endcenter