I forget where I found it's orginal edition, if you know the source where it came from please tell me. Thank you!
\documentclass[11pt,onside,a4paper，fleqn]{report}
\usepackage{graphicx}
\usepackage{epstopdf}
\usepackage{placeins}
\usepackage{amsmath}
\usepackage{array}
\makeatletter
\renewcommand\arraystretch{2.5}
\renewcommand\normalsize{%
\@setfontsize\normalsize\@xpt\@xiipt
\abovedisplayskip 4\p@ \@plus2\p@ \@minus8\p@
\abovedisplayshortskip \z@ \@plus6\p@
\belowdisplayshortskip 4\p@ \@plus3\p@ \@minus3\p@
\belowdisplayskip \abovedisplayskip
\let\@listi\@listI}
\makeatother
\parindent0pt \parskip10pt % make block paragraphs
% do not right-justify
\title{\bf } % Supply information
\author{ \\ \\*\\}
% for the title page.
\date{\today} % Use current date.
\begin{document} % End of preamble, start of text.
\maketitle % Print title page.
\pagenumbering{roman} % roman page number for toc
\setcounter{page}{1} % make it start with "1"
\tableofcontents
\pagenumbering{arabic}% Start text with arabic 1
\chapter{Introduction}
\section{Objective}
\begin{itemize}
\item
\end{itemize}
\chapter{Experiment}
\section{Procedure}
\subsection{Code.m}
\subsection{Result}
\chapter{Analysis}
\hspace{0.8cm}
\section{Conclution} % Print a "section" heading
\hspace{0.8cm}
\end{document} % The required last line