Go to the website https://e-admission.psu.ac.th and click the "Register" button.

A message box will appear with the "Personal Data Agreement". After reading and understanding, check the box "I agree to collect", then click the "Continue" button.

Select the nationality "Foreign student."

The Passport number verification page will appear. Enter your Passport number and click "Check Data."

In the "Personal Information" section, fill in the required fields: Passport number, Title, Name, Date of Birth, and Mobile Phone Number.

In the "Address Information" section, choose either Live in Thailand or Live Abroad. You can search for your address by entering details such as Subdistrict, District, Province, or Postal Code, then select from the search results. If your contact address is the same as your house registration address, check "The same address as the house registration address."

In the "Education Information" section, select the Province of school, School name, and Current education level.

In the "Account Information" section, enter your E-mail, Confirm e-mail, Password, and Confirm password. The format must be correct. If valid, a green checkmark will appear on the right. Click the eye icon to view the password entered. The Confirm password must match the password.

Check the box "I confirm that all the information entered is correct and true in all respects." Then, click the "Register" button.

After registration, click the confirmation link sent to your email (within 60 minutes) to activate your account.

Go to the mail box you registered with.

Look for the email from "no-reply-e-admission@psu.ac.th."

Click the confirmation link to activate your account (only for the first time). You must click the link within 60 minutes of registering, or the link will expire, and you will need to register again.

After successfully clicking the link, a message box will appear saying "Account activation is complete." You can now log in.

The email will also contain your password, which you will use to log in to the system.

Enter your ID card number or Passport number.

Enter the password you registered with.

Click the "Log In" button or press the "Enter" key.