Milad an Nabi

Mawlid (Eid Milad an Nabi) means “Birth of the Prophet” is a term used to refer to the observance of the birthday of the Islamic prophet Muhammad which occurs in 12th Rabi' al-awwal, the third month in the Islamic calendar.
Mawlid is celebrated in a carnival manner, large street processions are held and homes or mosques are decorated. Charity and food is distributed, and stories about the life of Muhammad are narrated. Quran is read.
Actually, celebrating the Prophet Muhammad's (peace and blessings be upon him) birthday is a controversial issue among Muslim scholars. Also the exact day of Prophet (PBUH) is not sure. , but it is most likely to be on Monday, 9th Rabee` Al-Awwal (20th or 22nd of April, 571 AC). The most correct opinion is that there is nothing in celebrating this occasion by acts such as introducing the Prophet (peace and blessings be upon him) and infusing vigour among Muslims as well as non-Muslims to study his sirah (biography).
There is nothing wrong in commemorating the event of the Prophet's birth to express our love for the Prophet (peace and blessings be upon him). We can use the month of Rabi` Al-Awwal to inspire our new generations and educate people of his great life and character. It is permissible to praise the Prophet (peace and blessings be upon him) through speeches, nashids (songs), etc., as long we do so within the limits of the Shari`ah.
We cannot consider celebration of Prophet's birthday as a bad innovation simply on the ground that it was not practiced in the early times. There is no harm in instituting new customs in areas other strict acts of worship, if there are benefits. Obvious benefits associated with this commemoration include: Inspiring the new generations and educating the people by the great examples of the Prophet (peace and blessings be upon him).Nowadays where Islamic consciousness is on a steady decline among Muslims, such a commemoration may go a long way in rekindling the fire of love of the Prophet (peace and blessings be upon him).
So finally,It is permissible to celebrate the Prophet's birthday as an expression of love to the Prophet provided that the celebration doesn’t involve any of the prohibited acts.