前提：mysql是zip版本的

下載地址https://dev.mysql.com/downloads/mysql/

步驟

1.新增環境變數MYSQL_HOME等於mysql的安裝路徑

  我的是C:\Program Files\MYSQL55\mysql-5.5.60-winx64

 2.在path環境變數中新增mysql安裝路徑下面的bin目錄

   即：%MYSQL_HOME%\bin

 3.在安裝目錄下面建一個檔案my.ini，並將以下程式碼的新增進去

# Example MySQL config file for small systems.
#
# This is for a system with little memory (<= 64M) where MySQL is only used
# from time to time and it's important that the mysqld daemon
# doesn't use much resources.
#
# MySQL programs look for option files in a set of
# locations which depend on the deployment platform.
# You can copy this option file to one of those
# locations. For information about these locations, see:
# http://dev.mysql.com/doc/mysql/en/option-files.html
#
# In this file, you can use all long options that a program supports.
# If you want to know which options a program supports, run the program
# with the "--help" option.

# The following options will be passed to all MySQL clients
[client]
#password	= your_password
port		= 3306
socket		= /tmp/mysql.sock
loose-default-character-set = utf8 

# Here follows entries for some specific programs

# The MySQL server

[WinMySQLadmin] 
Server = C:/Program Files/MYSQL55/mysql-5.5.60-winx64/bin/mysqld.exe
 


[mysqld]
port		= 3306
socket		= /tmp/mysql.sock
skip-external-locking
key_buffer_size = 16K
max_allowed_packet = 1M
table_open_cache = 4
sort_buffer_size = 64K
read_buffer_size = 256K
read_rnd_buffer_size = 256K
net_buffer_length = 2K
thread_stack = 128K


loose-default-character-set = utf8 
character-set-server = utf8
basedir = C:/Program Files/MYSQL55/mysql-5.5.60-winx64 
datadir = C:/Program Files/MYSQL55/mysql-5.5.60-winx64/data 
 



# Don't listen on a TCP/IP port at all. This can be a security enhancement,
# if all processes that need to connect to mysqld run on the same host.
# All interaction with mysqld must be made via Unix sockets or named pipes.
# Note that using this option without enabling named pipes on Windows
# (using the "enable-named-pipe" option) will render mysqld useless!
# 
#skip-networking
server-id	= 1

# Uncomment the following if you want to log updates
#log-bin=mysql-bin

# binary logging format - mixed recommended
#binlog_format=mixed

# Causes updates to non-transactional engines using statement format to be
# written directly to binary log. Before using this option make sure that
# there are no dependencies between transactional and non-transactional
# tables such as in the statement INSERT INTO t_myisam SELECT * FROM
# t_innodb; otherwise, slaves may diverge from the master.
#binlog_direct_non_transactional_updates=TRUE

# Uncomment the following if you are using InnoDB tables
#innodb_data_home_dir = C:\\mysql\\data\\
#innodb_data_file_path = ibdata1:10M:autoextend
#innodb_log_group_home_dir = C:\\mysql\\data\\
# You can set .._buffer_pool_size up to 50 - 80 %
# of RAM but beware of setting memory usage too high
#innodb_buffer_pool_size = 16M
#innodb_additional_mem_pool_size = 2M
# Set .._log_file_size to 25 % of buffer pool size
#innodb_log_file_size = 5M
#innodb_log_buffer_size = 8M
#innodb_flush_log_at_trx_commit = 1
#innodb_lock_wait_timeout = 50

[mysqldump]
quick
max_allowed_packet = 16M

[mysql]
no-auto-rehash
# Remove the next comment character if you are not familiar with SQL
#safe-updates

[myisamchk]
key_buffer_size = 8M
sort_buffer_size = 8M

[mysqlhotcopy]
interactive-timeout
 

   注意上面的有幾個地方需要改一下，那就將路徑改為你的mysql安裝路徑就可以了，一共三個地方，已經加粗了

4.開啟命令提示符，進入%MYSQL_HOME%/bin目錄，執行命令：mysqld -install將mysql安裝到windows的服務。執行成功後會提示：C:\Program Files\MYSQL55\mysql-5.5.60-winx64\bin>Service successfully installed. 

5.開啟mysql服務

   net start mysql   開啟服務

   net syop mysql  停止mysql服務

6，執行mysql -u root

    這時我們不需要輸入密碼就可以進入到mysql，因為是第一次登陸是不需要密碼的

7.進入到這裡面之後，修改密碼即可

  mysql> update mysql.user set password=PASSWORD('123456') where User='root'
mysql> flush privileges